I agree. It's not as if Wally in particular was singled out here. I've just heard too many similar comments about DC characters. IMO, they are not characters, they're trademark placeholders. Anyone looking for character development, for example, is gonna be disappointed. I think that's what's sad--these characters are pretty shallow compared to previous incarnations.
For what it's worth, I still find Barry to be too stiff and uptight--and I actually like Barry. I've just learned the hard way that it's a bad idea to get too attached to DC characters these days.