I didn't notice it, but I don't have much real-world experience with swords. But I've had to work at ignoring things I see in movies involving guns, lest I lose all sense of immersion or annoy my wife with sarcastic comments. I'm not even a "gun guy." I just have enough experience with guns to note the silliness. Also, I was really into snakes when younger and that is another thing that I can't help unsee in movies. When they use corn or milk snakes as stand-ins for poisonous snakes. When you know even a bit about something that showmakers expect that vast majority of viewers will know nothing about, you are going to find yourself annoyed by things that most people don't give a second thought about.
Luckily I don't know enough about magic for its depictions in shows to bother me. ;-)
And, of course, King Snakes standing in for Coral Snakes. "Red touch yellow, kill a fellow. Red touch black, venom lack."
Some things just jump right out at me in a terrible way, like obviously blunt sword blades. I didn't mention that it also looked like it was made of aluminum, because a goodly number of stunt weapons are. If I remember correctly a ton of the swords in LotR were aluminum.
Then there's the 30 MPH motorcycle chases. ( I have 8 racing schools, two advanced street riding schools, and over 20 years of motorcycle racing photography in my background.)
... and armour (I make both welded steel and costume grade aluminum chainmail.)
... and the guns. (Firearms and Restricted Weapons certs here in Canada)
... and the archery. (No expert but I know the basics, and make bows from oak and PVC pipe.)
EDIT - And let's not get started on the on-screen "computer hacking"
I try to ignore such things, however, some transgressions are particularly egregious. I appreciate when the effort is made to make something at least
look real.