>>103613623
It's because they bitch and whine about it. If they just think it's not worth learning and therefore they won't watch that's fine, but the sentiment is they don't think it's worth learning and therefore their oshi should not do this content at all. Check any comment section for a holoEN talent singing in japanese. Something you absolutely do not need to understand the language to enjoy.
JPschizos are annoying and people act like annoying faggots in response. Nobody actually cares if person A or B doesn't want to learn japanese.