Both are laughably terrible for different reasons.
The Boys has been garbage since the first season ended (and I thought the first season was pretty good, not amazing or mindblowing or anything). GoT's fall from grace was from an exponentially higher pedestal, which is most likely why GoT Season 8 is "the bar" for how shit a tv show becomes.
From my perspective, if you put a gun to my head and demanded which final season I *had* to watch, I would undoubtedly pick the show that
didn't involve two people sniffing each other's asses and figuring out what each person ate for lunch.
I will also say that at least shit happened in GoT Season 8. Granted, it was stupid shit ... But shit
happened (and the same cannot be said for The Boys).
GoT Season 8 is in the history book for how not to end a series, and that reputation is well-deserved ... But the final season of Stranger Things was SO much more excruciating to sit through, and based on all of the clips and spoilers I've read about The Boys season 5, it falls into the same category of garbage as Stranger Things. Lots of monologuing and bullshit without much happening, wasting hours of my life.
GoT ended with the mercenary being in charge of the economy, no questions asked. That's fucking hilarious, at least I can laugh about that.