Well, just because you don't see the progress doesn't mean there is no progress.
Framework _is_ stuff that get's done.
Go take a look in the source code for the different versions.
Sorry, but the reason why he takes so long is because he is building a solid foundation for his house. If you don't like his house, or prefer smaller houses, no problem. Walk away and take your pick. There are hundreds of other houses to choose.
But the only thing you are demonstrating is, that you don't understand what's happening.
He shows no signs of abandoning this project, and was very upfront with his vision. I see absolutly no reason to bash the author.
I do partly understand your anxiety. There are plenty and plenty of people who bite a big chunk and then can't chew it, but to my knowledge the author hasn't shown signs for that yet. On the contrary, he has shown multiple times, that he has a vision and a plan.