That is why if you want to join a fair and clean bounties try to join bounties that are managed by a professional bounty manager that has long experience in dealing with this kind of issues and always remember that participating in bounties is always a choice and taking a risk is our choice
Bounty manager is not going to take part in dealing with such an issue, you have to understand that the bounty manager is only a servant in the hands of the team owner who is also being paid by them for organizing the bounty. If the team wants to force a KYC on the participants then everyone has to follow that including the bounty manager, whatever be the stated reason.
A bounty manager can be a long time one and a reputed one, but financially deprived vaporware being spread on social media about some shitcoin being the next bitcoin or the next big thing in crypto does not help the manager at all. End of the day the bounty scene is pretty messed up with the advent of KYC, this I agree with. Hence my suggestion is to move away from bounties and go for bitcoin paying signature campaigns.