I've asked the same question in the past, and had the same non-response as you seem to be getting.
Yeah...I've noticed that.
For some reason, the fact that the PHB actually makes a player THINK about how their character will react and act in situations is not coducive to roleplaying.
It basically gets ignored as "oh, that's just the usual spiel all gamers should know" yet when I ask, "um, where in the older editions did this even give half as much focus", I get nothing.
However, what I find troubling is that having a CRAFT and PROFESSION skill _IS_ considered roleplaying.....
*Blinks in disbelief*.
To me, the 4e PHB is the first ever D&D book that would make a person think about roleplaying than any other book.
I don't consider it roleplaying when you have a person rolling a profession check and saying "oh, I made 200 gp a week". It certainly scares me that so many people consider this "more roleplaying oriented" than having a book teach players so that when faced with different situations, they react "in-character".
Absolutely weird as hell when people say 4E is not a roleplaying game.