I think the 4E default assumption that "level 1" kobolds have 24 hitpoints might be a large part of the problem lol.
You are of course free to dismiss the problem as old however if 5E is going to be one edition to rule them all then its an issue that will need to be looked at.I think part of the problem is also in the gap between "Level 1" and "kobold." We haven't been in the days where a humanoid followed the precise rules for monsters in a long time, even in 3.X you'd have to specify "Level 1 kobold warrior." People keep referring to a "standard" kobold when it hasn't existed for over a decade.
Minions don't work for me. Maybe if I were playing Feng Shui, they might, but they're too cinematic to fit in with the simulationist parts of D&D for me. Another part of it is that I've seen this scenario play out too often:
Player: That's a natural 20 ... and I've confirmed.
DM: Okay, they're dead.
Player: (rolling) So let's see that 12d6 + 12, 22, 42, 67 points of damage. Oh, and they're evil outsiders so I do another 2d8. (rolls) 74 points of damage. So how much did I kill them by?
First time I met a minion, I got deprived of my right to roll damage for my magic missile. The wording in that sentence should show how I felt about the matter.
You are of course free to dismiss the problem as old however if 5E is going to be one edition to rule them all then its an issue that will need to be looked at.
Which is a large reason why I'm a big advocate for a sliding scale of lethality. Introducing a module to make monsters and PC's more or less durable depending on taste will help the game "feel" like what D&D "should" be to more people. That way those who prefer early editions can have kobolds be nothing but kobolds that die quickly and in droves, while those who prefer customizing monsters can have their varied grab-bag of kobold skirmishers, minions, warriors and rogues that cause a more intricate combat encounter. It's a simple enough introduction that can accomplish a variety of playstyles.
All of said playstyles are D&D, none should be discounted.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.