Gone are the days when hunters receive huge sums as rewards in fiat value when exchanged. There were cases of someone making as much as over $10000 in a single campaign and it happened that such coins have dumped drastically by now, so the hunter would have lost huge if he never exchanged and then it was the period of receive and dump quickly.
Back in the early days of bounties no bounty hunters made $10,000 you mentioned in a single bounty campaign expect if the person was among those that spam bounty campaign through multiple account.
Right now the trend has changed, it is now the period of receive and hold, anyone that dumps will be dumping for a very cheap amount, may end up regretting when such tokens have pumped several amounts higher than how much was sold. Imagine working for three months and receiving $10 in token exchange value and dumping at such amount where it would be worth about $100 waiting for some months being favored with the impending bull run.
The crypto market trend have change a couple of days back and crypto every hodler need to hold their coins as you said but that does not apply to all altcoin or token in the market for some coins/token will never join the surge movement cause the concept behind the project don't have genuine thing to offer to crypto sphere, cause there are project better off or because the project don't have the utility to survive. But, I will advise everyone to digest the future possibility of a certain coin/token before holding it for long.