"Wah, Toad's deconfirmed now!"
"Wah, Luigi's no longer a hidden character!"
"Wah, Olimar only has three Pikmin now!"
"Wah, Wii Fit Trainer being playable means ANYONE can be playable now!"
There's controversy over every character reveal, it seems. Peach is no different. Her mere reveal has gotten the entire community frenzied over Toad, and I'm not surprised in the least. If anything, I'm just waiting to hear about "Waddle Dee de-confirmed!" when King Dedede is revealed, or "Sheik is being replaced by Impa!" when Zelda makes a reveal by herself (which happened on the Brawl Dojo).
This is going to happen
every time a character is revealed. The best we can do is not have a friggin' seizure over it every time it does.
Also, simply to open a can of worms for the sake of opening a can of worms, Toad won't be playable, Luigi is still hidden, Olimar indeed only has three Pikmin, and Wii Fit Trainer is not an excuse to support your shoddy one-off characters.