If the Bounty Manager knew that the project is scam and still promoted it than they deserve a negative trust.
But if they didn't knew about that, they are no different from bounty participants as they get paid to advertise.
If bounty manager are to be given negative trust for working on a scam project, bounty participants too deserve one as they too promote for payment.
This statement maybe right but Im against with it, heres the logic (if there is no careless people there will be no thieves).
The root must be killed in order to end those evil things or what we call scam.