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.
This is a very sensitive issue, because if so, I have usually been in projects where they have had a very large community, where the moment came when the project was on the cusp and when the developers and creators of the project started doing things bad with the community, the massive dumps began and it was so much, that today they have not yet been able to raise in price, reached almost 20USD the currency, and now it is in less than 1 USD.
Now the projects impose some rules to avoid the dum of the bounty hunters, because many times the projects do not have liquidity to support the massive dump, in the case that there are not many investors, the ones that can be united in a great way are the bounty hunters that are ready to do the dump at any time, that is why they have an impact.