Do all bounty hunters dump Cryptos after they get paid?

I believe this is not a fair assessment as a lot has to do with the crypto project itself.

Its a matter of perspective really, not all bounty hunters have the same experience or motive, some people just need an opportunity to get crypto for projects that are very difficult to get in the token sales, Example is Ncash tokens of Nucleus.Vision the project has a 1 million USD budget and it is still above ICO price even in the bear market.

Additionally some projects treat bought hunters badly which will not encourage them to stick around for much longer after they get their tokens.

I believe tokens or coins getting dumped by bounty hunters depends a lot on the project itself.

When you are still a newbie to this cryptocurrency world, it is better to take action and study the flow of its ecosystem and be prepared when you make an investment to avoid a profit loss. Don't make drastic move that you didn't prepare to it. Always make your own research first.