People want to make money from bounties by force, bounties aren't real money making side jobs because they won't always give you good results, most times bounties are all on lucks and if you want to expand your luck chance you need to promote every good project that you see, some will turn out well and some will turn out badly, there is nothing that can change this
Exactly, you couldn't see bounty campaigns as a source of passive income. Bounties are mostly on luck if your lucky enough and the project is based on a great concept then there are possibilities of getting paid well. Unfortunately, most of the time bounty hunters have to face failure and fewer times they would get paid for their work.