Producers and directors rarely pay attention to choreography.
Despite the general production quality, budget, and attention to detail in other aspects, it rarely follows through with choreography.
Unless the production in question has choreography as it's sole focus (Haywire comes to mind) or is some sort of (Blood and Bone, the Warrior, etc.) fight sports drama.
Even when attention is given to it in some areas (see the second episode of Daredevil vs. all others) they tend to forget about it later on, and default to either flashy stage moves or slow, simple, telegraphed struggles with unstable camerawork (to hide the shitty choreography) that is, I think, only acceptable in something like Blue Ruin, where you have regular people fighting to the death.
I don't think the industry has a solid stable (not that these people don't exist; merely that there's probably no relationship established between production companies and such experts) of medieval martial arts choreographers to call on, and when they do, I don't think they bother to listen to their opinions on what's best for displaying an action.
They don't care about it because they probably don't even think about it. More importantly, they believe your average viewer does not, and they're probably right. Note, however, that the bar is being (very slowly) raised in modern unarmed combat choreography, so I'm sure that something similar will happen with medieval fight scenes one day.
Probably when we're middle aged fucks and watching movies on VR while walking around our abodes.
