To my understanding, KYC simply means "Know your customer". Investors(customers) who participate in ICO are made to go through KYC process before they are even allowed to purchase their tokens. On the other hand, Bounty hunters are just "part time workers" of the project and not customers. Even if they will be made to go through a KYC process, it should be before they start working and not after. Waiting for them to finish working for the project and refusing to pay them because they failed to pass KYC afterwards is a total cheat.
I personally do not object to KYC. But KYC is not in accordance with the nature of cryptocurrency"anonymous". Everyone can get a cryptocurrency without showing their identity. Indeed, in each project request KYC as a sign of recognition. Because investors are not project managers, or developers. So there is no need for KYC to buy tokens or coins. KYC is needed for project developers or managers (team). For investors, the TX etherscan is enough to prove they are buyers of tokens or coins. Whereas for bounty hunters it is very unnecessary about this.