If you think that bounty manager running mostly the scam projects then you have to go to the scam accusation section with all the proofs, if you have enough proof that he run three scam project then he will be painted in red.But it is our responsibility to check the quality of bounty before participating in it.
The only reason this is not in scam accusation section is because bounty hunters hardly visit there This section is where most bounty hunters spend their time and go about their job.