Bounties that are run and managed on platforms outside of this forum do have some risks. For now, most bounties on platforms or bounties on bitcointalk are equally at risk of failing. Many scam projects are promoted. The inclusion of the bounty is not because the bounty is a scam, but the bounty cannot reach the sales target.

The thing that bounty hunters can do is to do a good and thorough analysis to find out whether the bounty is good or not and can produce or not. Following a bounty managed by experienced senior managers may be a safe choice, but must continue to do research before following it.