You can get legal guardianship of a family member but they have to have more profound disability. Typically CI (cognitive impairment), lower functioning ASD, TBI (again lower functioning). I am familiar with it professionally. Courts won’t granted you guardianship of someone just because they make bad choices even if these bad choices affect everybody else.

I don’t believe in this situation husband is talking about legally removing his wife’s rights but rather expresses his convoluted and stupid opinion that since she keeps getting into troubles/bad situations and gets into confrontations with people, she is better off not going anywhere. It’s a messed up and ridiculous suggestion but I don’t believe he’s talking about removing legal rights.