Yeah, I'm with Spinachcat. Deeds of this alleged predator? Nope, none of those. Identity of this alleged predator? Nope, none of that. Just pure vapor. Whose word are we taking for this fellow's purported depredations, anyway?
Now I know the temptation to protect our wee innocent girlies from the Wicked Wicked Men, but eeesh.
I have to agree it looks odd, or even like a good cop bad cop maneuver.
But unfortunately sometimes stuff like this does happen and nothing is done about it. Sometimes because the person doing it puts up a really good front of seeming innocent or painting the victem as the villain. I've also seen admin take an "Its not our problem" or "just put it on ignore."
I've had two accounts of this happening at LARPs and really have to wonder why no one did anything?
Worse. Ive been tracking since the mid 90s a former friend who was the online equivalent of a serial emotion rapist. Draw someone in with this story of how previously they were betrayed by a former friend and how they neeeeed a loving friend like the new mark... and after getting really close - turn on them. Then paint them as the vile betrayer to the next victem so any warnings will be met with hostility. One of his buddies defended it with the old gag of "Hey its just words. Words cant hurt you." followed by "Oh yeah. He does that to people face to face too. No big deal."
Friend of mine who used to get commission art ran into no less than two artists who would not do art for her unless she "proved" she was a "real woman" by giving out her phone number so they could "verify". Both vanished around 2001. Personally as an admin on a site I banned one player for pulling a similar stunt. Unfortunately he just moved to an online chat where the admin do not care.
As for the source of the OP. Who knows. I've seen a-lot of absolutely fucked up stunts on and off forums over the years.