Indeed he did, and it's a bunch of spin. There are always "right" builds in anything. Hell, with the current WoW talents there are cookie cutter builds for roles, so the change to the extremely limited talent tree is pointless.
WoW doesn't do everything right, and GC isn't some infallible developer.
There are "correct" choices, and there are other "correct" choices. Check out Rifts talent trees if you want to see one of the best talent systems around. I personally hate what WoW has done (and what Blizz did to D3) because it removed so much choice from the player and made what few decisions you did make rather pointless.