Well, Frogboy deserves praise for some things and criticism for others. He deserves praise for doing a good job communicating with the public and in general being up front and honest about it. But he does deserve criticism for some of the low quality stuff that is still in the game (bugs and whatnot). I think that some criticism is also warranted for releasing a game that is lacking many standard features that every online game should have nowadays.
You can play the blame game between GPG and SD all you want. But the bottom line is that SD hosts the official forums and its their company's symbol that I see first every time I start up the game, so they have to deserve some of the criticism for how many things have gone wrong with DG. And yes, despite all of DG's positives, a lot of things have gone wrong with it that really shouldnt have.
Its probably not fair to blame Frogboy for everything just because he is the guy nice enough to be communicating with us all the time. But he is the leader, and the leader is going to take the blame for what happens under him even if its not really his fault. Thats just part of being the leader.