It was added to the “exclude” list in an apparently unrelated commit three days ago with absolutely no explanation. Glancing at its front page I see nothing objectionable, just a lot of anime stuff. When challenged u/dessalines had nothing to say other than “no, that is full of CSAM” and just closed the discussion without further comment.
Unless some more info comes to light it does not look good. Probably as good a time as any to depart from lemmy.ml.