I didn't read Harry's statements as stereotypically male-child-stupid or even stereotypically male-stupid, but stereotypically hyperintellectualist-male-stupid - as in specifically similar to behavior like Luke's, not that of any non-Internet non-rationalist man I've actually met.

If I had to imagine a male doing that with a straight face in Real Life, it would likely be a right-wing dick talking through his ass who likes evolutionary psychology because it supports his position rather than because he actually has a good understanding of it (Exhibit A). OTOH, I can imagine hyperintellectualist males doing that tongue-in-cheek, and occasionally the joke would fall flat unless his interlocutor was hyperintellectualist herself.