Regardless of what they offer, the end value is a token and likely will be worth a fraction of what they are advertising so it's likely that less than 20 users will even join the campaign.
Seems like you underestimated level of greed and lack of judgment of an average bounty hunter. Despite all those red flags, almost 50 people already joined signature campaign...
What is even worse, after bounty is over they will expect that those tokens will worth all those thousands of dollars as promised, but of course that won't be the case. And then some of them will come here and cry how they have been scammed and whatnot.
In so many cases bounty hunters are as much as responsible as those that create these kind of bounty campaigns. If bounty hunters do their own due diligence and choose projects wisely, there would be way less shitty bounty campaigns.