I talked to both sides, seems like some mixups of IC and OOC.
Without getting into specifics it seems it would be far, far easier to just let it go, Esna. Let them have their end of the pool, you stay on your end, and that might just work best.
I think some of the claims you are making about their actions aren't quite supported, and the person you are concerned with has pretty decent IC explinations for some of the things you are taking issue with, at least enough that it might be best to just leave it be? This seems certainly NOT a case of 'someone who doesn't fit in the eve universe" after speaking with them about the things you are concerned with.
Also they are stating you've done some not-fun things on your side as well.
I'm not taking sides but I don't see any benefit to continuing for you all to interact.
I don't see their claims as being particularly game-breaking or strange at all, although this is only from speaking with them for about 15 minutes on the topic. They had decent answers for most everything I brought up from the devil's advocate point of view.
My 2 cents, and I'm happy to elaborate as Esna would like here or privately.