I don’t know how it is on mbin but on Lemmy the best thing to do is message the admins directly, and not bother reporting. This is because Lemmy’s developers give way to much credit to the legitimacy of forum moderators and do not allow a way for reports to only be sent to administrators, meaning that community mods like these can easily dismiss reports before they are seen by admins. So best thing to do is message them directly at the current time.
I think that Lemmy would benefit from a tag system, one that allows both adding tags to communities but also to posts, the upshot is that these could be handled like hashtags on other federated platforms like Mastodon. Lemmy already does this with posts in a community, but it’s just a hashtag of the community name, would be good if users could add their own tags.