i do 100+ kyc in my crypto life. this is too late for me now. who knows maybe they use for good things. i am not afraid 
You are not afraid?? Wow this is some top notch confidence that you have.
Scammy icos collect your KYC and will fill the airdrop with yours KYC to claim tokens. Example assume that a person have 12000 KYC collected from scammy ICO then he can claim Tokens from a legit ICO.
Assuming the price of tokens that you get is as low as 10$ then 1.2 Mil is the amount that the scammer will get.
Moreover Your Info can be used at illegal places which could get you in trouble at some point of life.