There are not many bounty hunters who always update the project information they participate in, based on my experience, that most bounty hunters are more likely to complete their tasks than look at the information in the project. For me this is ignorance about the project scam, and if they know, surely the hunters don't promote the project.
Perhaps the more precisely the cause is when they are busy with work and also the campaigns that they participate in are many, usually they are also not easy to control to be able to the many campaigns they can follow. maybe this is one reason why it's hard to know which projeck failed