I'm not sure anything would even happen. He's not "part of the pokemon community", he just opens cards on stream. Nobody who plays competitive pokemon or pokemon TCG knows he exists. It would be the same for Smash, except there's no extracurricular stuff for him to get sidetracked by. It's not like he can keep doing story mode forever. I can't see him playing Ultimate online and I definitely can't see him being intelligent enough to figure out how to use Slippi. (Although, in DSP's defense, he might actually like Ultimate, since no Nintendo games use rollback!)