>>23742607 kids? I understand her being upset when he wants to leave if there's work around the house that needs doing.
Instead of just straight up calling her psycho, unless she is an unironic narcissistic abuser, I would tell your brother to have a serious, one-on-one conversation with his wife to ask why she is so against him going /out/
If she is a rational human being, she can be reasoned with and your bro will get to go hiking if he can balance hobbies and house.
If she isn't, your brother is getting what he deserves for coming in crazy 7+ times