Yeah. I expect that from background characters. I'm also okay with tropes and genre conventions and needing to look cool for the screen.
To me, it wasn't background characters in this case. It was a main character with a lifetime of combat experience. Even with giving some leeway for genre and such, a lot of it seemed heavily contrived. (I suspect, if this were a rpg campaign, the DM would have been heavily railroading the group into specific encounters.)
There were a lot of cool ideas. How they were put together was a bit suspect though.
I think, for me, what makes it stand out is that there are/were times when the show was brilliant. So it highlights when things are a bit shoddy.
If this helps, I look at it kinda like a pro-wrestling match. Yes, it is fantasy. Yes, there are things (like the Irish Whip) which make no sense but are accepted as part of the genre. But there's still an underlying psychology to how/why things are done are particular way.
When it's done well, I can get sucked in enough to not thing twice about Undertaker being a zombie or Steve Austin being coherent enough to wrestle after drinking 36 beers. When it's done poorly, I might think "wtf?" over something as simple as a wonky-looking wristlock.