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
You are not far from the truth, that is just the whole truth. From my own opinion, I think the reason why most people rush all the DeFi bounties without bothering about checking how true they are is because of the DeFi hype. The current trend now is Defi and since that has lead to massive growth recently, people now see DeFi projects as the best even though the team are anonymous and might have nothing to offer. To add to it, once Uniswap listing is confirmed, no one cares about due diligence but to participate and get their own share.
Just like you indicated, there is no doubt, there are good DeFi projects but one should be careful of the majority out there which are only using DeFi hype etc to achieve their aims of satisfying themselves.