I think sexism has simply changed the way it works.
There are enough female bosses now that few people have problems taking women seriously because of their gender. Instead, what it discriminated against now are roles, which could be done by either men or women; it just so happens that in the vast majority of cases it's a woman in that role. And discrimination doesn't have to take the form of outright criticism; it can be a lot more difficult to pin down than that.
So, for example, if you're a single parent you're twice as likely to live in poverty. 92% of single parents are female. If you're the primary carer in the relationship, your career is likely to suffer more than if you're the 'secondary' carer. Most primary carers are women.
Most women fall foul of structural sexism once they become parents, though they often don't realise it because letting your career take a back seat/being the parent with care following separation is the default position in our society for women and utterly normalised.
Because men can be cast in these roles, it is difficult to argue that it is the fact that the 'victim' is a woman that has resulted in these problems. However, that is looking at the issue very superficially. Once you start realising that women are socialised into taking these roles much more so than men, almost from birth, you realise that women are very much still discriminated against in society.