I have seen so many bounty people make multiple accounts and cheat bounty campaign, is it not possible for forum or bounty managers to make kyc compulsory for bounty guys?
Those who have done kyc will get instant approval
You do have a point but it would have make more sense if all KYC requesting projects can pay bounty hunters, I'm guessing you haven't join a bounty campaign that ask for KYC and still not pay bounty hunters in the end and they went to list on exchanges like no one can hold them for not paying hunters.
Most of the campaigns are scams or very low value. The bounty hunter is both working and selling the KYC, it's very unfair. This requirement is no problem with escrow campaigns because 100% participants will receive payment.