In all of this, there is a bunch of smoke but no fire. We never have had a rule requiring users to post their own picture on their profile ( I don't think anyone really believes that I'm a wolf).
Obviously a young female profile with nothing but older men on her friends list is concerning (even a red flag) but once again not against the rules.
Typically the only time we end up banning users as frauds is when there is irrefutable proof such as serious inconsistencies in post content about themselves but when someone has little to no post history that is difficult.
Simply put, the old adage "buyer beware" or in this case, "poster beware" is in full effect. Catfishing is just as old as the internet and in reality even if we removed every user that someone had a suspicion about, there would be just as many still here that no one caught on to yet.
IMO any adult male that is randomly conversing with underage women privately is bordering on foolish. I wouldn't think of having a "private" conversation with a young lady at my church where I am well known and even more so online.