Please don't look for posts from /u/hardtimes without a severe CW for scat and who knows what else at this point.
I think it's worth considering what kind of damage trolls, wreckers, and edgelords in general can do with such images in the future. @Frank@hexbear.net may have been right in that struggle session today; such open image posting may be a mistake.
If Hexbear is anything like the upstream, there should be admin settings for rate limiting image posting. An aurofilter is a much more difficult task.
With everyone and their grandma making a dream.ai clone, is it really still that difficult? Especially for a forum with, what? At most 200 images uploaded per day?