I think bounty managers shouldn't be blamed, how can they know, if an ICO is a scam or not. Bounty hunters have also got some responsibilities, they have to research well before participating in an ICO.
Yup your right,also the bounty members do some research to the project.I do not blame the bounty managers,coz we know were part of the bounty to promote the project same as manager that didn't know that the project is scam were all victim.we hope next time scammer gone