Some airdrops require personal info from their users like government approved ID proof, a selfie with it, contact number, email, address etc. Does this information really required? How to know if somebody is scamming you for asking this kind of information?
Personally, I think asking for all this information in an airdrop is not really necessary because they are personal details and should be kept personal. Though I do not do airdrops but I do not think you should supply this information to an airdrop.