> Tests are sexist, so we need to adjust for that to give men a boost

I don't think I saw anyone claiming that. What was being written was that boys do a lot better on anonymized tests relative to girls than on GPA (which is inherently non-anonymous), so removing testing is actually exacerbating sexism in education.

This is probably the comment you're referring to: https://news.ycombinator.com/item?id=33339235