p.p.s. Someone has pointed out that lemmy.ml (the official Lemmy instance) resolves to the same IP address as lemmygrad.ml (the instance that contains the most disturbing material).
Lemmy.ml also federates with lemmygrad, and the devs advertise lemmygrad on their "join lemmy" site.
Do the Lemmy developers themselves run the lemmygrad.ml site? (Its main logo is a tank, incidentally.)