I don't ever give KYC for airdrops. There is no proceedings. I am not their customer or client. Why would they need to check my income and source of funds? It makes no sense at all.
He agrees with you. This procedure seems to me senseless too. I did not participate in airdrop long ago. But even when participated never provided for them the data.
What if the manager doesn't know that the participants should go through the KYC verification?
Sometimes the bounty manager doesn't know too and sometimes the manager should pass the KYC verification too to get his cut which wasn't in the agreement.
Usually for airdrops the amount of money that they send to participants is too low and most of the time there are thousands of people that apply and it doesn't worth to apply KYC for them.