alt Hacker NewsI agree with the underlying point and the social bias it reflects (which i have experienced myself) but the title here is (as usual) just the article so The Guardian is to blame rather than HN.
I think the solution is not to disallow the titles, but to comment on them and draw attention to the sexism in the article.
The solution is absolutely disallow offending titles. The same principle that would make HN moderators take down a "Kill all the Jews" title from the front page should apply for this one too.
Submission titles should be the original article titles, as long as those aren't problematic.