That is the reason of why i am only being part of those airdrops that are only coming from good companies or good projects. As an example, Polymath was asking for KYC of a single airdrop of $5, haha. They are dumb as hell.
actually, i do not believe in airdrop. they just collect your personal data and say good bye to you. no one give you their money. they should join bounty campaign.