A little late to the party at this point, but I do think it's notable that people can get excited about hints or even the smallest bone being thrown to them over something they know will never happen. I don't think every person who gets excited over even the slightest potential for a character is saying that the character is 100% going to happen, or even at all likely. Some people just like to support a character for fun.
Like I'd love it if Neku from TWEWY were in Smash even though it would never happen. Same goes for a Phoenix Wright character, and some other stuff. It's fun to think about the possibilities sometimes instead of being stuck in reality, particularly when there's nothing happening as far as Smash news goes right now.