Most times these projects are playing hide and seek when they say hunters are dumping the price. Some investors have more than all the total token allocated to bounty and when they list, they don't usually have good volume. So if such investor decide to sell off they will link it to hunters. It's not the truth.
This is just an excuse to cover up the dev team's unpreparedness. How could they blame the bounty hunter for selling together? even though it is they who determine the allocation for the bounty campaign, if they already know this risk, they should make an allocation that they can handle. Or determine other strategies such as buybacks, or give rewards with other coins such as BTC or ETH. In essence, the irresponsible dev team always blames the bounty hunter.