I would agree with this. I think the problem was the rush to get to the finale hence plot lines that don't make a lick of sense.
I kind of disagree. The finale wrapped up all these plots in the most excruciating way possible. If it were good, I think people would have overlooked a lot of the problems with the last season... in fact, that was probably most people's hopes because there was excitement all the way up to the end, then thud. So that seems to be the finale's problem. I don't think I was satisfied with the outcome of like 90% of the cast, besides, maybe, Arya and Sansa.