Yes, they cleverly subverted our expectation to be entertained.
We didn't set the theme. The show did that.
I don't that that that is it -- the show just doesn't make any sense. People teleport all over Westeros. They just appear. Hundred of wights are raised around Jon as he approaches the NK and he magically hacks his way through them? The Dothraki don't have dragonglass or Valyrian Steel, so what was the big idea with a blind cavalry charge into the field? Mel shows up randomly to give the boys a light, which is nice, but the charge is still pointless. Jon yells at a dragon...
I think this week's episode was better than the "Battle of Compressed Black Pixels" which isn't saying much, but it was a step in the right direction.
Angel's conclusion was OK, but rushed. "Oh shit, we're cancelled, let's tie a ribbon on this thing!" The whole Circle of the Black Thorn thing was rushed AF and the "is Angel really bad or just faking?" plot device was a bit worn at this point. The final episode, however, had great character payoffs.
I wonder, what if Joss had been given a few more seasons and it had not been cancelled? Honestly, I think it would have died of exhaustion like Buffy. Probably good that it was killed when it was.