Good points, I definitely generalized and you raise important distinctions. I think in general the unconditionality of familial love extends more towards your dependents rather than your parents/siblings - if you dislike your child, it's really your responsibility to raise them better, rather than just abandoning them. But if you have abusive parents or a toxic sibling, you should prioritize your health and happiness.
And it's also true that certain sub-cultures will judge you differently. Like if you're all beefed up and dressed in a suit, you're probably not getting an invite to Dungeons and Dragons club. I would say in general following your country's norms for attractiveness will result in more social success but if you present yourself inauthentically you certainly can end up attracting people you actually don't want to associate with.