That’s a good point.
I think most people subconsciously ignore details that can interfere with their enjoyment of a movie. We want to be entertained. That’s why we bought a theater ticket or rented the movie.
It’s harder for me to ignore things like wigs, lipstick on male actors, or bad sets in HD. I try to ignore it because those details don’t matter to me. The distraction takes away from the movie.
Maybe I do focus more on faces as my hearing gets worse. I always keep subtitles turned on.