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.
I don't think so. Even I don't dump the moment I get my tokens. It's just not good of a move to do since you won't get the most profit from that move. Just hodl as long as you can and pay close attention to the price movement through exchanges. You might get the best selling price.