Bounty managers who care about their public perception will be weary of this crypto market now and won't just hop on just any project. This is because there are way too many scam ICOs now, some of them are well packaged that it's hard for these managers to see the scam ab initio.

Secondly, some of these bounty managers are creating automated bounty management platforms. This is evident with managers like Bountysuite. So it's very possible that the mentioned managers are taking off to create theirs too.