That's the gist of it. In particular, the question of why more men don't write YA often comes up because girls are more likely to read than boys, and encouraging more men to write in the genre is often proposed as a solution -- as opposed to encouraging boys to read books by female authors.

The other issue, for me -- and one I probably should have called out more explicitly in the text of the post -- was the exclusion of YA as a genre from NPR's science fiction and fantasy poll in 2011, because it is almost certainly true that more women would have been on that final list if YA had been explicitly included. Add in the fact that of the eight books (all, coincidentally or not, by men) being on both lists, and I find the whole exercise suspect.