We do not know, but I've gained a reasonable amount of money for some airdrops. Some airdrops require to do KYC, that I won't participate because they will get your own identity for just a few bucks and its not worth the risk. Just be careful on clicking links of those airdrops, it might be a virus or their means to hack your computer, we do not know.
I better skip airdrop which requires our documents for KYC. A lot of airdrop now requires KYC and I don't think it's worth the airdrop value we get. I agree that we must carefully click on the airdrop link because what we get is not commensurate with the risk we get