I mean they’ve got multiple blood relatives in the group. Seems way too close to incest for my and probably most other people’s tastes. Totally understandable why someone would downvote that, and I don’t think that warrants a block at all :\
I see “no problem” as nicer. If I say that, I’m expressing that I really don’t mind, and there’s no need to thank me. No problem, as in I had no problem with doing this thing
“You’re welcome” feels more like “I appreciate you thanking me, because I went out of my way to do this”, if that makes any sense