I just read what he writes, and don't try to make more out of it then I see written in those lines.
The passage you quoted gives me the feel Clark might not like the fact that most of the powers are limited to damage + status effect/movement effect (especially the latter), and would like something else. I don't know what that something else would be. Maybe he wants not every major class ability after the 1st level abilities to be limited to powers. Maybe he wants to get away from the tactical/board game focus of the powers and have them stand more "on their own".
I don't see him claiming 4E is no longer an RPG or nonsense like that. I can't really say 3E tactical combat gave me a strong role-playing feel, either. I think combat is just combat. It's fun, it's exciting, and in most good games, the character you play, the role you pretend to be in, matters in combat. But role-playing is still a little more in that. Maybe Clark wants the powers to matter more outside of combats. Maybe he wants to make the powers a less prevalent component out of class design. Maybe he wants to have powers that deal more non-combat stuff, too.
I have no idea where he will end up with this. Maybe it'll interest me, maybe it won't.