I doubt the bounty hunters are reading anything here other than generating meaningless reports. You to warn them in the branch itself. And they should be afraid of getting a tag for supporting the scam.
It is no use warning them in the brach, as my warning will just drawn in reports that come after. I'm even sure that those, who just make reports and dont even scroll through posts on the page, age either bots or sort of autofill script. Tag warning wont help either, because it does not affect being in social media campaigns.
Also, I cant tag. If I post a negative feedback in their trust, nobody will see it as
-1. They would know that I'm bluffing or will instead put negative feedback to me for threatening them without having real powers.