@emilygorcenski You've convinced me, at least! If I ever run a server, all languages will be welcome, and I'll just deal with moderation issues as they arise.

Also, yes, it would definitely be racist for a grocery store manager to disallow a language! I guess my only caveat would be that, unlike a grocery store conversation, posts and comments here are public forever, and can be directly linked to. So that does put a tiny bit of extra pressure on things. But I think presuming the worst for non-English posts is obviously racist, so presume the best and deal with issues if they ever come, IMO.