Nope. Ad hominem would be attacking that website's content and/or credibility by insulting the people that write it. The parent poster is critical of the wiki contents itself.
Ugh, why is the simple-minded application of buzzwords so horribly prevalent in discussions of this nature. I honestly can't think of anything that exemplifies "derailing" more than posting links to Geek Feminism that are almost entirely irrelevant as part of a complaint about someone's comment.
