I couldn't say where they've come from, but yes I'd agree...

... DU seems to be crawling with conservatives, more so than I remember from years ago. And it's incredibly obvious even from just a casual scan of the site.

Lots of the sort of ugly-minded thinking that, to me, marks the right wing: arrogant, uncaring, dismissive, incurious. Simmering with resentment, soaked in privilege.