Good point but if the bounty hunters are have enough knowledge it will notice it immediately once the bounty campaign is a scam. So better to check all the necessary details before joining in a campaign. I prefer joining in a bounty group in the telegram because it always work for me and the advantage is it can directly message the bounty manager and the admin on where project are joining.
sometimes some bounty hunters do just like you. already feel confident and cool with some bounty manager. for communication of course it will be easier. but sometimes some search for themselves in the forums and many are stuck with the bounty campaign that the team from the project itself is shouting at.
I think when you want to be a participant in the bounty campaign you have to be able to see the concept of the project being developed first and after that you can see the existing whitepaper and compare it to other whitepapers, most scam projects will steal whitepapers from other projects, and make sure the team is not there. affected by a scam case in any project.