> I seems to me that they are already kept in check.

To a degree, yes. But are you really trying to pretend it's already perfect?

Though you seem to not believe in systemic injustice, so I doubt we will be able to find a shared consensus.

Custody is a more widely known example were us men fight an uphill battle. Obviously not everyone is unsatisfied with societies default roles, but I'd certainly consider this a harm, if I ever end up in such a situation.

Again, it could be worse. And I'm not trying to meddle in your life. If you and your SO want to live by traditional roles, that's great. But I don't want those thrust on (and thus being meddled with) my life. And I don't want to live in a society that doesn't even try to improve anymore.