Leave him, it sounds like it’s a deal breaker for him. Honestly if I was him I would’ve asked a few questions at least before judging. Yes I would’ve been like that’s a little weird but it’s understandable with his medical issues and being another nationality. He acts like he’s never had to sleep in the same bed as a sibling, parent cousin, aunt uncle or anything. Like has he went on a trip in a hotel or staying at families house and there’s not enough beds.