I don't think KYC for airdrops offered is fair for those who joined. Some ICO with airdropping is not also fine to get KYC for tokens worth almost nothing or a burger meal is not really fine. I observed it in some ICOs with airdrops that even with giveaways like that so small needs KYC? Don't fall for it guys, not worth it.
I agree, to some point, because it is not safe to submit your personal infos if the project is not worth it and only to find out it is worthless coin. But the problem is personal infos are given. So just be very careful. Learn to wait and see if the project is really worth passing of your KYC.