Devs should stop blaming bounty hunters for dumping ,they work hard to promote your projects and they have every right to do what they like with the tokens if this is really what you don't want then
Don't pay bounty hunters in your tokens ,pay them in USD ,USDC or ETHEREUM to avoid dumping your tokens and that will have positive impact on your tokens ,dumping will always happen and if the project is a strong one then it will quickly recover
Whether the bounty hunter will sell the token, on the one hand, the project party decides if the investor has great hope for the ICO project and thinks it will succeed. I think bounty hunters will not sell tokens right away.