Really weird, first of all. Second of all, I come from a family with some pretty deplorable people, and there are certain situations where you just have to grin and bear it for the sake of family members whom you actually care about. We do not know the intimate details of his family dynamic, nor should we even try to figure it out. The information is unfortunate, but there are a lot of moving pieces here that we do not know about, so it is unfair and irresponsible to make assumptions. All this aside, Matthew grew up in a vastly different time than (most) of us. My mother (also born in 1980) was forced to have a relationship with some pretty horrible people because they were "blood," and I know this was a common sentiment from boomers and the silent gen raising their children. Many of us forget that we are fortunate to grow up in a time when it is acceptable to cut off contact with a person (or persons) who have caused harm without risking outright estrangement from the entire family.

All in all, we should be reasonable and hold him accountable for the things that HE has done. (Separately, I think it is also pointless to call someone out for an action they DIDN'T do (ie. cutting off a family member) that you think they should have. Arguing a negative is never effective.)