The fear of dumping often makes the project team fear or avoid the payment of hunters until sometimes after the exchange listing. I wonder why the team make themselves restless on an easy thing like that when they can easily conduct their bounty with bitcoin or ethereum for payment. That will safe them of the fear that the bounty hunter will dump after the exchange listing.
Many bounty hunters will dump their coin immediately when they heard that their coin is listed in an exchange, investors will wait until the dumpers are gone so that they will slowly make the price high so that they can sell it too because dumpers make it so low , or else they will use this opportunity to buy more coin. If company will pay in btc or eth it could be hard for them to pay , when they dont have enough fund, I mean they will fund their project first before anything else.