I don't think that he should say the reason he joined the bounty or the investment in the project. Because, that won't help at all. The most important thing is he can prove that the project listed above is a scam. Even though he is a bounty hunter among the projects and he is not paid properly, we can assume that there are projects that are not responsible and have poor management in their financial and marketing fields. I still appreciate the information that the OP provided btw, but it would be better if he can added more real and valid evidence.