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.