That would have to be anwered by the GreyLord (whom I believed coined the term).
Aside from the tusked bit, that could be said about various bellicose humans as well.
Dunno. Never played 4e
That looks like the 3e reimagining of orcs where they went from LE in AD&D to CE in 3e.
This is the first D&D orc image that I ever saw (1e MM):
View attachment 378205
Here's from the 2e Monstrous Manual.
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Sorry, it's been awhile, I've been busy.
Creatures of Chaos.
It's actually more of an older idea, inspired by things that D&D originally were inspired from.
LotR was just one inspiration, but Cthulu,, Moorcock, and others also had an equally heavy inspiration (and threatened lawsuits as well!). Conan and Howard were other inspirations (as well as a whole slew of others that actually got mentioned from time to time and...well...if you look hard enough you may even find a LIST!!)
In these ideas there are different powers of the universe you could say. Many creatures and monsters do not have the freewill that men have, or do not possess. In some of the universes there are two major forces at work, that of Law and Chaos (more of a Moorcock idea), and in this one even fewer have the power to change what force they work for or, at times who they are champions for. It's an eternal war.
In other universes, those of Lovecraft, for example, the things that you fight are things of the unknown. These are monsters undescribable, many that can drive a man mad.
However, for Orcs, we have to look to Tolkien who probably got the term from the Latin for...wait for it...wait for it...
Hell.
Yep...that's right. The word Orcus is Hell. Though that is a more MODERN term (stemming from more the late 800s onwards...orginally it would have been more congruous with Pluto and the underworld...so in that idea could also refer to the grave).
However, I expect it was more in relation to Tolkien's works. Tolkien makes no qualms that Orcs are Monsters. There are several ideas of their origins that some say he put forth. It goes from the idea that these were originally elves that were corrupted so badly by evil that they became the creatures of evil. Others say they were literally spawned from spawning pits (and this idea is seen in the LotR movies).
Tolkien was writing this sort of a history of England and the West in a way (if I recall the tales right) and in that way also connected them with Goblins...but Goblins ALSO have a separate annotation in relation to D&D.
In D&D Orcs and Goblins are also somewhat related. Goblinoid races as we call them, and this harkens directly to the Fairy Tales of England and the British Isles. Goblins were sort of a general term for any evil or mischievous spirits. You don't want to mess with the goblin (or monster in modern times) under your bed.
These are NOT creatures you negotiate with, and in general, your average person would not want to deal with them.
That's why you hire the adventurers in the first place.
This was no mystery to most early players as to that Goblins and Orcs were evil, as we were literate and had read, or at least knew, about most of this stuff already.
This is one reason why Gygax at times probably said that it was okay for Paladins to kill Goblins and other creatures like that indiscriminately. These creatures were irredeemable as per the old fairytales and would more likely destroy and kill as that was their nature.
This is NOT a great mystery and shouldn't confuse anyone. At least I would not think it should. I am surprised that people are NOT familiar with these things today. Perhaps it's the generation gap?
Things that were obvious to us when I was young are no longer things that are known or understood.
However, it wasn't so long ago that things went bump in the night (probably less than 150 years ago that we had electricity, and less time that everywhere had electricity). Goblins were among those things referred to as monsters (and we still have creatures that people talk about when they can't explain something and we can even find some of them in the MM as well, such as the Yeti, the Bigfoot or Sasquatch, the Mothman, Ghosts and Vampires, Goblins and Ghouls...etc.).
The Monster Manual is literally an encyclopedia of many of the Monsters that we see go bump in the Night. Goblins (and thus other goblinoids like Orcs) may have lost the mystique of the fairy tales they came from of old, but we still consider things like Zombies, Ghouls, the Undead, and many other things in the MM as Monsters to be feared and found in Horror films...and many of them we still would not play as being able to reason with. Most Zombie movies have people who try to talk to the Zombies either eaten or ending up a one themselves!
HOWEVER, Keep on the Borderlands did NOT come OUT with the original set.
The ideas of it are obvious in the intent though. Caves of Chaos should be obvious. You have a bunch of different monsters just hanging out with each other. Why would they do this? What purpose does it have (of course, the purpose is to give you a bunch of monsters with treasure to loot...but we mean something else).
In this, you see a common theme that some people today mock because they cannot understand. Different monsters and creatures came together for a singular purpose either under the control of an individual, or something greater. In this it could be seen as they were together as the forces of Chaos to destroy that order of the other races and people of the land. They were literally the forces of Chaos come to destroy them all.
This was not an idea that was lost in AD&D either, though I imagine many never really understood or were introduced to it (as you can see by the humanization of many of these creatures in the D&D novels and other locations as the 80s progressed).
In AD&D it references these types of forces and how they may align together, or at least hints at it with alignment languages and other things similar to this. It was far more diverse in it's approach than originally though, as alignment languages.
It should NOT be a mystery how these were nightmare creatures (and an still be viewed that way, if played the way they are in many fairy tales, or heck, just played how they are portrayed in the Lord of the Rings they would still be really nightmarish to the normal average person...this is WHY they need that help from the outside. There are monsters and things you cannot deal with, even the village itself as the monsters are to immense to deal with themselves).
However, as time has gone on, the game has evolved and merely seeing them as these MONSTERS from the fairytales and stories of old have died down greatly. When our adventurers hear of Zombies in the graveyard, most groups today don't have their adventurers thinking something dark and dreary is amiss that could destroy their souls....better just take the loot and run...
Nope, now it's more heroic fantasy than Sword and Sorcery.
And so, talking to them is just as adequete as going to kill them all as a playstyle. It's a good way to play. Paladins may fall in these types of games if they acted as Gygax and others of old had them be. Paladins have a code to uphold, as do others.
It depends on your playstyle though. One of the big types of playstyles in the past wasn't actually killing these "Nightmare" creatures either. That's not what got you another level. It was more to steal the loot and get the heck away, if you didn't have to deal with them...even better!
There are many different types of playstyles and even I have not seen them all (and I've been playing since the 70s myself!!).