Check the modlog for proof, a discussion post about moving this instance to an instance that shan't be named now got removed for "linking to instance featuring pedo content".
Ironically that exact possibility was reason for the discussion in the first place so seeing it happen this quickly is a bit funny.
Not sure how best to go about linking to said instance since it seems to get your content removed. DM's would be the only solution I guess but not sure if those are checked as well.
If there's an "uncensored" version* because of the nudity, it probably qualifies as soft porn, all the more when a portion of the cast are minors (as the Wikipedia summary suggests they are). This doesn't strike me as a hill worth dying on.
*It's been trending on 9anime