If you don't think the whole expedition beyond the wall to capture one zombie to bring back to Cersie thing was laughably horrible writing, I don't know what to tell you. Whoever put that whole thing together shouldn't be allowed to participate in a creative endeavor ever again. I think that was the absolute low point. I'm sure Martin's outline bullet that led to that was just something like, "the whitewalkers kill one of the dragons and convert it into an undead dragon they use to destroy the wall." From there the writers concocted the masterpiece we got to chortle through.
The suspension of disbelief part of that is what became difficult in that episode. But, moreso how quickly they made it happen.
Unbelievable things get accomplished in this world just by “sending a raven.” How difficult is it to believe Tywin Lannister, Walder Frey, and Roose Bolton can all communicate with eachother via bird mail and hatch a completely perfect plot to murder a king where every single person executes flawlessly to accomplish their goals?
Not very believable if you think about it. But, in this world it was more believable to the viewer because it was laid out over several episodes.
The lead up to the expedition episode even had them all talking about how stupid it was to try to go get this thing.
Then all in one episode they walk a while and talk, fight a dead polar bear, find a small group of wights, manage to kidnap just one, get swarmed by the dead, send Gendry running for help, he sends a raven, Dany flies the dragon to save the day, lose a dragon, then Jon gets saved by Benjen.
I’ll agree that’s a lot to try to pack into one episode and could be deemed laughable, but it was still fun tv. Is that the writer’s fault?
BenJen was already out there from the original story. They needed the dragons out there for the dead army advancing to make sense moving the story forward.
I believe all those things were intended by Martin, but the show runners were hamstrung by a lack of time. That series of events would have been more believable to the viewer had it unfolded over several episodes. In seasons 1-5 or so the polar bear fight ends an episode. Them capturing the wight and sending Gendry running as the full army shows up ends an episode. Then Dany arriving and the full battle ends an episode. But, deadlines.
Had Martin already laid that out for everyone over 200 pages it wouldn’t have been so universally panned.