@coluber2001,
For myself, closed caption is the gift of a life time. I use it in conjunction with the sound. Reading along isn't that new to me as I have done it for years with subtitles with movies not done with the English language.
Dysfunctional, maybe. It has improved vastly since the early days when it would often show up as near or even utter gibberish.
Closed captioning is a piece of progress I appreciate.