KYC is protection from multi-accounts, if you can prove your identity, and others can not, then you will get more payments!
This is true, but at least we should be informed at the beginning so those who are not comfortable giving their information would not waste time on the bounties.
I've had an experience of this. I participated in a bounty campaign and was asked to submit my KYC details before they could pay me. This is very bad and sad as I could not give out my details. Something surely needs to be done.