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.
Pretty happy with my instance. :)
Tbf though I don't check the mod log.
Do you get a message if something happened with your post?
Not sure, never happened to me yet. I'd guess so. I noticed with the previous discussion post because I have instance admin superpowers (jokes aside as admin I still see deleted posts even on other instances)