Yeah, you're right about the hgc posts, I contacted one of the curators after I placed the comment to improve on that.
And yes, it just seemed like such a small project at the time that the funding wouldn't really cross more than 3-5k hive which at those prices was not much to bother going through the DHF - considering every thing else that gets rewarded it seemed like the easiest method at the time for something as important as POSH but for the next step which will be bigger we will definitely go through the DHF.
I just mainly wanted to point out that compared to others in that list who just get the rewards personally these two things stand out.