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 ..
For me kyc if needed in project that is fine. But it is important to inform the bounty hunter before the bounty that kyc needed not after the bounty end.