KYC for big investors is already required in every project, even small investors are required to verify KYC but not as complex as big investors, and KYC for bounty is to avoid multiple account fraud
KYC in bounty is not to find scammers, but in order not to pay coins to bounty hunters, there is a big difference between the companies that introduce KYC at the beginning of the company and the companies that introduce it at the end.