I think that the tokens earned by the bounty hunters through their own labor have the right to choose the timing of the sale. If the project party is worried that the price will drop, then you can choose to pay the equivalent value of Ethereum or Bitcoin instead of hoping others not to sell.
Yes I agree, the bounty tokens earned by the bounty hunters are rewards from their hard work. We cant tell them what they must do with their tokens, it is all up to them. In my case, I hold my coins for a while, but of course we cant tell the others to do the same because they own them, and the decision to hold or sell them right away is really their choice.