when the team is afraid of the dumping done by the bounty hunter, then it is concluded that the team does not have a mature plan,
they should have had an anticipation with that.
like doing a buy back.
the anticipation is important to complete dumping, not avoid it with fear,
if the project is serious, all is well anticipated.
Good point you had there mate.
A good team will anticipate every side not only the positive but also the negative side. In that way, they can overcome every obstacle that may come to the project.
Also to answer OP to his question,
Bounty campaigns won't pay btc or ethereum for their bounty participants, since bounty hunters is needed to spread their coin in crypto space. If bounty hunters will received btc or ethereum as payment, there will be less volume and lack of circulating supply of their coin in the market.