No one, there's a lot of bounty campaigns, perhaps giving good bounties, but we don't know if the tokens will have a value in the future and that is the risk involved for being a bounty hunter. Heck, there were even projects who suddenly exit scams and everyone was left with nothing, except bounty managers being red tag.
So in that case, it's risk to join them, others might recommend you this and that project, but still you need to research and not just easily jump on that project.
It's not like it's 2017 again that even a airdrop is going to be worth hundreds or even thousands of dollars. DYOR (Do Your Own Research).
There are a couple of projects that are running bounties in USDT, these bounties are being handled by trusted bounty managers. Hunters can join those bounties but those that are not paying in USDT are very risky. As there is no guarantee of these tokens getting listed on an exchange and if they do there is the risk that they won't get the due amount released in time. The price fluctuation is very high when new tokens get listed on an exchange, so the promised amount to hunters might be less when they sell their tokens on the exchange.