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.
If you don't like it then walk out. If you think it worth giving your KYC details then go for it.
What comes first to you?
The promise of the money or your anonymity?
You need to know your priorities.
I think you are missing the point of the OP. Is not about keeping anonymous, is about sending your personal documents to someone. They may end up in the dark web for 10$ a piece.