I mean, to each their own, buuuut yeah IMO that’s silly, lol.
This fandom has always been toxic. TBH 99% of fandoms are, and that’s primarily because the ones who are throwing tantrums are the loudest voices.
Plus I’mma be real, if they ever ditched guest characters, Smash would plummet in playerbase. 13+ million sales weren’t because they added a new Mario character, or even Ridley or K. Rool: It’s the big 3rd parties that get everyone’s attention.
And this isn’t saying first parties are bad. However, statistically? 3rd parties get the big reactions, especially when the only Nintendo characters left on the table are the B and C list characters that would be more catering to a niche, something that ironically, some of this community complains about on the rare occasion they do with things like FE.
Basically:
Fandom bad lol.