From what I know there are a lot of fraudulent “companies” that are sending false DMCAs to anyone and everyone on YouTube (the channel deephumor is documenting them). They’re copyright claiming on behalf of people they aren’t even authorised to act on behalf on. They copyright claim people just talking about anime, no clips from animes, just talking. Whether they’re actually authorised by Viz media or not, who knows. There’s this Remove your Media, there’s also another called The Media Entertainment or something just claiming stuff as their own to silence critics. YouTube just allows them all since it’s just run by bots now.