~snip~
I don't think that is bounty manager's fault.
I think it is also your duty to do some research before joining any bounty, however, altcoin bounties are mostly scammers.
It's partly bounty manager fault. He should review thoroughly the project before he accept the job offer. Remember that he has an option to turn down the offer and yet he accept it with full responsibility. He should always think the safety of his bounty promoters before he get this job just like what other bounty managers do like ensuring the funds in case the project turn to scam. Legit project will accept that terms while scammer will automatically turn down that offer.
This kind of stuff was already discussed in this forum multiple times and many sucks bounty managers was already punished for being an irresponsible. He should stop accepting too much job offer if he can't handle the screening of each project. He seems good and I hope he can re-evaluate his goal.
PS: this is not the only project that he managed and turn to scam.