Presumably they mean discrimination against women, which has been the predominant form of sexism. It's not even clear this is firmly sexism, it could be effect

Presumably they mean discrimination against women, which has been the predominant form of sexism. It's not even clear this is firmly sexism, it could be effects from 20 years ago trickling up to today. Our current educational pipeline is long and involves literally thousands of people making their own decisions about how to teach you.