Be careful with altcoin bounties, they are mostly scam, I'm not saying all of them are but majority of them are not making sense, make sure you don't just join bounties without proper analysis, the most annoying ones are DeFi bounties, full of projects with no team information, do your part and save your time and energy.
that is the risk of becoming a bounty hunter, but I agree with you if we have to analyze the bounty that we want to join and I personally always analyze several factors before I joined the bounty, that is:
1. the rules for the bounty must be clear and fair;
2. the idea of the project must be good and useful for the future;
3. the team must be quick and active in responding to investors;
4. the team is always updating information about the project;
5. the project must run in accordance with the roadmap that has been made.