There a valid reasons to use the DHF as a funding method. I.e. blocktrades can't sustain a whole team of developers just with witness pay or even his stake appreciating in value. Or for example, the work Netuoso has done for the ledger application - highly valuable (sadly it's been in limbo for months and I'd like to use HIVE on ledger sooner than later :P).
However, I fully agree that it makes look DHF like a method to milk money when people who benefited from it already left/went inactive, even if they had no bad intentions, or if proposals are overpriced.
problem is with DAO communication. And marketing proposals never get funded.
I think marketing is the most important on any project. If nobody knows about it, it's worth noting.
More Investors, more users, higher prices, higher budgets for development stuff.