People get salty because companies like Capcom totally listen to the competitive community wrt game balance, and are catered to constantly. Smashers just want that, but they'll probably never get it. Nintendo of America seems to like the competitive scene a lot, but the bigwigs in Japan don't give even half a ****.
Cuz they don't have to, their game will make billions without our help. Chances are, Smash WiiU is still going to be the biggest selling title for the duration of the console's life. Smash3DS will probably sell pretty well, but it's got Pokemon to compete with and will likely not measure up. I bet it still makes boatloads.
I dunno, I played Brawl for awhile, and it was still fun. I have every smash game, and I like them all. I enjoy playing them, and I enjoy watching tournaments for all of them. I'm probably still going to buy this one too, whether it "meets the standards" of the melee community or not. I consider myself a "smasher", and I always will. Even if the game I like to play isn't considered "the right game" by the "cool kids".