How about asking for BTC for the fee besides the tokens they allocate for the campaign.
DRK Defi is also an example that one campaign you would probably take because they did risk real funds loike the TRX tokens. Its just few though.
Managers are also being paid by the team. You can't expect them to challenge the team.
Bounty campaigns are not regulated but most of hte time DT users are looking into the potential bounty scam though which is good.
This is the team of this project decision, it is not like hunters can tell project team how they will pay or in what form, since you know this then why you saying it like it is up to hunters to decide,
There is nothing anyone can do in this case, it is up to hunters to join or not to join any bounty, if you promote a project out of your own free will and never get paid at the end you have to accept the outcome because you already know the odds.