I mean personally as someone who was defending the show a lot into the Eighth season, part of it was copium/denial., part of it was in spite of the decline I was still enjoying the pay off of a good number of moments and was still invested, and the other part was I still felt and still feel that seasons 6 and 7 maintained a certain level of entertainment quality if not sophistication in story telling so seeing some hold the opinion that those seasons were some abortion of television, I thought people were being overly harsh.
In hindsight, I still enjoy Season 6 and 7 but the benefit of a long time with hindsight makes a lot of the flaws I overlooked more glaring. But I'm not going to act like the Battle of the Bastards and its lead up isn't entertaining to me even if there's some structural flaws in the story, just to name one example.
Season 5 to me is one of the two I'd have to labor to get through. Across the board, the story is dull and tonally...strange. The only way I can describe it is you can feel D&D's uncertainty in not having material to adapt through almost every facet of the season. Few big moments outside of Hardhome provide any real entertainment and the Sand Snakes are f***ing awful on top of that. Everything in Dorne sucked. The religious uprising thing could have been compelling if it had been written with more proficiency than "Cersei needs an opponent to overcome on her way to being Queen"
At least in season 8 there were some emotional payoffs here and there. But, in hindsight I don't know if I can bring myself to watch it again. So many things could have and should have been done better if D&D just asked for more episodes and let most of the plot threads cook better. I tried to like season 8 and there are still some story decisions I'd defend to this day, but those decisions needed much much better development. Almost nothing ended up feeling earned. And going back to watch such a comprehensive waste of potential just seems like a miserable way to kill 8 hours of my life. The problem is knowing there will never be a better ending to the show than what S8 gave us, it kinda sours rewatches of any of GOT for me.