Bedrockgames
I post in the voice of Christopher Walken
There's a big difference between early seasons' and later seasons' subverting expectations. The early seasons' subversion came from the assumption people have going in that the main characters will find a way out of the deadly situations they put themselves in, and GoT (and ASOIAF to begin with) said, "nope." Characters, no matter how important they seemed, facing the consequences of their actions was (and to be real still kind of is) a bold storytelling choice.
The later seasons' subversions OTOH were plot and characters twists that were never earned.
I agree with this as well. Game of Thrones flowed like history initially, which felt like on the one hand subverted expectations but also felt like things were happening in a way that felt genuine. The later twists seemed like they were there simply because the show felt it was supposed to have them. Again, Walking Dead did something similar.