We cannot really stopped KYC its the bounty management discretion if don't want to give you personal info just like me because it' s too risky for us just simply don't join bounties that asking kyc.
I agree, if you don't want to fill KYC, then just following a bounty that doesn't require KYC, there are still many projects that don't require KYC, indeed in the KYC the security of personal data is not guaranteed, so there is a risk of misuse, I am not really a problem filling KYC in a bounty but the project must have good prospects and deliver great results