What i know, KYC means Know Your Customer ! Bounty hunters are there to Support ICO Project to spread the word about the project .. BUT as soon as the Project manager mention KYC then many Hunter run away ! Why? Is it because people don't want review their identity for security reason or people are joining campaign with bot software ..
Everyone bounty hunter has the right to refuse those KYC implementations because they know that hacking is very rampant in the internet. Even facebook gets down because of hackers so it's very risky to hand out your documents to people you don't know who has it. I know in twitter campaign, there are a lot of fake participants but managers can fix it even without KYC.