As someone who hasn't watched GoT, only heard of it from others, let me guess: In those two episodes everyone dies a very cruel and painful death, except for one or two main characters?
From that point on, everyone gets 10 inch thick plot armour, and then the last two episodes skip a whole season or two of character development to try and box the show off quickly.
Television writers pussying out in their finales is its own meme at this point. Makes me respect David Chase and how The Sopranos ended all that much more.
It's the way stuff is done, the characters' changed behavior, incomprehensible logic, stupid explanations, etc.