for now, there are no penalties for bounty managers who manage crap projects, but all this will reduce their own reputation where the projects they manage no one wants to join or some participants send redtrust.
If a manager already has a bad reputation then I think there will be no more followers, maybe many will leave him, but if the bad ones are from the project, I think it is not the manager's fault and he only manages it with offers that have been agreed upon.