I think this is the OP's dream. For the team to start paying for their advertising to bounty hunters in bitcoins, I think that first, need to have a really clear position of the project. But, you must agree that all or most of the bounties end badly. It is more profitable for the team to pay with their own tokens, than with a proven coin.
It will only happen if bounty hunters unite not to promote or participate in a project that is Ethereum based
Try to do this at least within the framework of this forum. Do you seriously think you can stop forum spam from bounty hunters?