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 do avoid airdrop especially those that are having KYC. The amount that I am going to receive in exchange to my personal information is not worth it. It is too small and I am just putting myself in danger. They may only want something in us so yes we have to avoid it. I also avoid some signature campaigns that needed KYC to receive the payment.