I have never submitted KYC for any Airdrop or any Bounty.I think KYC should not be required for Airdrop or Bounty hunters. Becuase they don't investment. They do a  job like a thing.I personally don't like the KYC process. Because I personally afraid to give my personal details to unknowns.If someone use someone's personal details (like passport details) for illegal action,It will definitely harm to original person's life.
that's why i don't like the KYC process.