Everyone already died a painful and cruel death for the first four seasons, that was what made the show so compelling to watch.

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.

Death is not a problem in GoT, the exact opposite, it is what the show is known for.

It's the way stuff is done, the characters' changed behavior, incomprehensible logic, stupid explanations, etc.

No. Why not just watch it instead of guessing.

If literally everybody had died in GoT and the White Walkers had destroyed the world it would have been an infinitely better ending than what they actually wrote into the show. It also would have been on brand for the show and the books themselves.

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.