That's an odd conclusion to draw from Kzach's statement (and not really supported by the actual evidence). A more reasonable conclusion would be that there is now a lot of really cool at-will powers available to each class, but given that you are usually restricted to 2-3 1st level at-will attack powers, there's no way for a single character to regularly access more than a handful over the course of 30 levels.
I think weapon-specific powers are the key to making your choice of weapon matter. It was what was promised in the 4e preview, and which wasn't delivered in the first core book.