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.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.