How many? Enough to make this comment anything other than a meaningless anecdote?
I'm over 375lbs and nobody will prescribe it for me.
There's my counter-anecdote.
My girlfriend has dyslexia and subtitles are a problem for her to read quickly. She would love an extension similar to this that “auto-dubs” by having a synthesized voice that reads the subtitle content and overlays this slightly louder than the original audio. Any ideas if something similar exists?