Wow, I didn't know about the Return Proposal. I'm relatively new to Hive (almost 2 years). I understand why this often happens with DHF Proposals, People are always attracted to flashy projects that promise a lot. You are already used to this in real life with commercials, what your neighbor or your friend sells from product catalogs or simply listening politicians' speeches on television.
People are often swayed by words rather than actions, which is why I agree with you that we need to be more demanding in approving a DHF proposal. First, you have to be well informed, then be as critical and demanding as possible.
Ignorance is a punishment and knowledge is a blessing.