Following the recent developments about airdrops which is not guaranteed to earn from it at the ending after taking parts in their various media activities, they will end up building their social media pages with participants at the ends paying trash and peanuts. now talking of bounties, most at time it pays but that is dependent of the project team to put effort collectively to make the project succeed before you could sell or converts your bounty tokens to stable coin or BNB. in most scenario some project owners don't pay hunters after promoting for their campaign.
I don't know why you say that rewards are not distributed until the project succeeds. After all, all the conditions are described at the very beginning, including the date of payment of the prizes. If you don't like when you get paid for participating in the campaign, you just don't take part in it. If the project does not want to pay bounty rewards then you have to create a scam accussation.
That is why it is important to do a good research of project before joining the bounty campaign. Of course, we will never be sure what the developers intentions are, but the better we check the dev team and the project itself, the more likely it is that we will receive the reward on time and it will be worth something after listing on exchange.
