And I don't know who was saying that in 4e. Because it simply isn't so.
Actually, it is. You will recall the controversy over the expertise feats? The low accuracy of attacks in 4e means you pretty much need every little stupid fiddly bonus you can get. So right away you need a primary bonus to your to-hit. That knocks out a lot of races right there, because you simply cannot get a twenty in your primary attack. And you need to hit or your turn is wasted.
Now (I know Essentials killed a lot of this), many classes were designed to need a secondary stat high, such as the infamous orbizard needing int and wis. This was ok to begin with as no race had int and wis...until they released the deva, who had bonuses to both. So either you played a deva as an orbizard, or you were objectively worse as a wizard. To make things worse, the developers handed out racial feats which straight-up made already good race/class combinations better (such as that one feat in Arcane Power for gnome illusionists, Gnome Phantasmist or something. I have the book, I'm just in school). So despite the fact that your orc illusionist sounded badass in your head, he is in all ways worse than playing a gnome. And for a game who advertised "any race, any class", that is straight up terrible.
But hey, what did we expect when the game tells us "Be an eladrin if you want to be a good wizard"?
Too many hp for too little monster damage. They've raised the damage.
Did they lower the hit points so fights don't take forever?
And what does it say about 4e that they've had to errata
their entire monster system?
Incidentally, I'd like them to stop continually overhauling the books. I have a small stack of 4e books anymore I can't use without cross-referencing the wizards site because they've all been errata'd over stupid things (let's change magic missile! Lower a damage die here!). And it took them years to fix the orbizard.
Name a few such concepts please - as long as they fit the professional adventurer mould?
Well, orc illusionist comes to mind, but I don't think that's what you meant.. Lightly armored spear-wielding skirmisher comes to mind. Wolf rider comes to mind. A priest of an ocean god comes to mind. Admittedly, I don't have the character builder. But to build a lot of core 3e and 2e concepts, you seriously need to dumpster dive through books just to build something like "necromancer," "poisoner" or "shapeshifter". All of which could at least be constructed in 3e's core rules.
As for your point about noncombat, I will simply submit that 4e's noncombat rules consist entirely of skill challenges (which the devs admitted don't work) and rituals (which cost too damn much and do too little). So there's that.