The entire final season was poor, awful pacing and odd decisions for major plot points combined with a lack of urgency. I wouldn't say it's as crippling as with GoT, and I make that comparison due to the popularity and draw of both series on a cultural level. The entire action section of the "end boss" was ridiculous, some going rambo with guns and others trying to combat a huge monster externally with makeshift spears feels like a cut plot point or weird message. You refuse to give your younger brother or his friends a gun, despite being armed like a lone wolf from an 80's action flick to go up against a living fortress or at the least unknown odds? Best to make sure they get close enough to stab its tower block sized legs with makeshift sticks instead! I know it's supposed to be a DnD theme, but it just came across as silly, made worse by the fact the "kids" were all clearly grown adults, something I had issues with earlier.
It was nice to see them get back to basics after the big fight, lots of plot holes with that too but seeing them go off in their various different directions was probably the only part of the season I can say I'll remember with any fondness.