Whatever happened to roleplaying? Nothing. It's the same place it's always been, with the players and the GM.
People should not be surprised when the primary topics of discussion here are things like stats and mechanic optimizations. These are, as somebody put it, topics for "computer dorks", and you're on an Internet forum. Big surprise that there's a high "computer dork" population here, eh?
Besides, how many debates can you hold about roleplaying? Can you critique someone's roleplay as being "better" or "worse"? Really, when somebody discusses a roleplay incident, you can at best, nod your head and recount one of your own. This isn't really much of a debate. What are you supposed to do? Pick his roleplaying apart? Discussions on this quickly run out of steam and sink to the bottom.
The books may not cover it, but really, roleplaying has nothing whatsoever to do with rules, and really don't change at all from system to system. Rules, stat mechanics, and all that, are there to allow you to make a character who's roleplay continues by virtue of not becoming monster food. RPing a dead character doesn't hold out too long.