I am a bit scared that some ICOs and recently a well-known bounty management group have decided to ask for KYC for bounty hunters. For me, that puts me on the spot of choosing if I want to risk to send my documents on line for not much money or just decide that I should not do any bounty.
The worst thing is that sometimes the KYC is asked after the promotion is done. For me that is just blackmail. What would you say if I agree with you to pay you 300$ to paint my fence and once you finish I decide that I will only pay you if you give me your address, copies of your documents and a picture of your wife or husband.
KYC can protect the company from users having multiple accounts and bots. Some countries REQUIRE a KYC in order to distribute tokens. Many bounties and airdrops block people from the US.
If you're not confident enough to send some of these ICOs your documents, you may not to do bounties for them. They're probably a scam most likely. I suggest finding quality projects that you won't have a problem sending in a KYC or find bounties that don't require any KYC.