I have an experience that I have never forgotten until now because I once participated in the Airdrop program, which ended in a scam! from the start, I didn't expect that airdrop had to use KYC, but the kyc was different from the others, usually kyc uses an identity card or passport, this airdrop asks for the UTC json file and I don't suspect the airdrop. then at the end of the month I opened my eth wallet, finally I lost my eth and my wallet was hacked by an irresponsible party. do you have experience like me !!
This is nothing new and it's more common than you can imagine. As much as this kind of scamming attempt is stupid, I'm afraid that it still manage to catch some stupid people who does not even bother to read and inform theirselves about what information they are giving away.
Also, requiring KYC in airdrops? Don't even consider it. Unless you are aso an investor to that project. Most airdrops these days are only for gathering user informations. It's a huge risk in compare to the reward you are receiving. Think about it.