> Not necessarily bad without knowing more about the parties involved. Some families are toxic and awful and should be cut off.

Maybe, but even in that case, you can't trust a spouse to do the cutting off because they are most definitely not unbiased.

If the cousin in question would have cut off ties without his wife telling him to, you might have a point, but the way the OP phrased it makes it seem, to me, that it was done due to instructions from the wife.

Certainly, and as a stranger on the internet I have no skin in the game, but "happy wife, happy life" is toxic poison that leads to deeply controlling relationships.