Almost 99 percent of DeFi projects in bounty section are scam, you can say I have no prove but this is just my normal thought.
1. Why are almost all bounties released today DeFi projects?
2. Most of these projects have no information about team
( They are complete anonymous)
3. Majority of them are rushed, you can judge merely looking at website domain and designs
4. There are some that based on Uniswap wannabes
You can't compare these projects with real DeFi projects like introduced bounties like Oikos, Lattice, DIA, and few others, my advice is to be extremely picky after doing research
The scamsters are just trying to use something which is trending to lure novice investors and they are advertising for free in bounty section. As bounty hunters we have a responsibility to stay away from promoting any possible scams if we are aware of it.
About the team staying anonymous for Defi projects , it's a tricky question. One hand you can argue that true decentralization doesn't need team visibility but on a investor point of view I would be afraid to put money in a place when I don't know where the money is going. As for now I am not into projects where teams are anonymous but that may change with better evolution of governance protocols.