I don't know. Wouldn't that mean that the new, younger generation (or simply new gamers) should have a similarly hard time playing, say, KOTOR, as the older did with their games?
Personally, I started PC gaming with PS:T and Baldur's Gate II. Leaving PST aside (because its combat is crap any way you look at it), BGII was *not* hard. And I was what, 12. I had no previous experience with D&D, all I knew about RPGs or Fantasy was LOTR and Final Fantasy VII. (Hey, I was 12.) I had no idea about those dice rolls and whatnot, still could get by without much trouble, apart from a few frustrating areas.
Granted, I seem to be faster at getting the hang of games than most people around me, but I don't think it's quite true that new games are just as difficult.