Airdrop uses KYC procedures for participants, certainly has a good goal to reduce multi accounts. However, KYC usage is not comparable to the results given to participants. I have an experience that is not good for Airdrop. Tokens that are sold are very cheap and many Airdrop scams. We recommend that before you follow Airdrop, it's better to check.
kyc is not eligible to be required for allocations under 1% for each user. kyc is applied to prevent large investments and various indications of fraud from investors. but for airdrop participants is nothing more than a giveaway with a nominal value which is actually very unreasonable to be required in terms of personal identity.