“It is one of my pet peeves, too. Not only are the costumes wrong, but quite often the hairstyles and facial hair are anachronistic as well. What really bugs me is when they have the men dressed in, say, mid-19th century costumes but the women are wearing 1890s dresses, as if the characters were living in different decades.”
I was responding to your post. I don’t go to the movies for authenticity. I go to be entertained.
Each to his own. Howling anachronisms distract from my enjoyment of movies and TV.