Not just that, other great projects will not succeed because of inexperience bounty hunters.. they didn't know to handle with their participants. bounty manager is a big rule you can't just chill and let the bounty hunters do their work. but there are also projects won't pay the right for bounty managers because they know it is not more effective for their sale. so we should do is dyor and make an effort to take a task that you can earn.
I think the success of the project does not only depend on the bounty hunters, the hunters only perform tasks according to the rules of the campaign manager. Investors cannot use prize hunters as an indicator of their investment. If the project is legitimate, even without prize hunters they can succeed in sales. So in my opinion the bounty hunter cant be blamed if many projects dont achieve success.