Bounty hunters are alwasy blame for selling their tokens so quickly without waiting for the project develpment as outline in the roadmap. I don't think bounty hunters are to blame because a lot of bounty hunters hold their coins for years.
Actually not all bounty hunters are dumper because many of them are holding their token for a good price. And how you can sold it many of are selling their token in low price. So as a holder you will wait a good price and time to sold what you have. And I think some always hurry to sell are always lose.