You are quite right. Not all KYCs are actually safe for one to do. Apart from ICOs, some airdrops sometimes require KYC of which you will later realize the airdrop to be fake. What then happens to the information they collected? Will it still be safe?
Actually, I dont really that agree with KYC, due to the fact that it was very demanding, in terms of the thing that they are looking forward to gather to the participants, and as a student right now, I am likely to have nothing by myself since I was still living with my parents, and currently studying here, and I have heard that they are demanding for passports and driver's license which I dont have either, I dont generalized.