Being a fan of hololive doesn't make everything you say or do tribal bullshit, you can be a legit fan of vtubers from both companies. At least one of those three comments shown (the cristian guy) was defiantly a legit Pomu fan who felt that Pomu's content wasn't worth his time anymore and decided to stop watching, that's a perfectly reasonable reason to stop watching someone's content, if it wasn't I would still be watching Achievement Hunter. He didn't seem like he was shitting up anything for fun, he seemed like former fan who was done with a content creator. Kind of weird he felt the need to announce it, but its not like its the first time I've seen fans of something feel the need to announce their exit.