Oh it's a godsend and turned on on every TV in the house. Without it I'd drive people nuts in the room by either turning up the volume real loud or using the replay button constantly to hear what I missed.

What bugs us now is some captioners appear to be getting lazy...like just typing ♪♪ [ singing ] instead of providing the words or not keeping up with live TV conversations and typing [ ... ] LOL
That happens (lazy) a lot. I think part of the problem is that the captioners have a heavy work load and some can handle it a bit better and still do details while others are overwhelmed and they just don't spend the time to research. Also, sometimes the captioners are simply transcribing from the scripts, and those scripts may not have detail about music, etc., since particular details are decided AFTER the script has been written and submitted or in the case of a classic movie, studios never followed up and put details into script after decision/rights secured, etc. Nobody wants to go "back" and do anything. The Film is in the can, and they just don't care anymore.
FWIW, it is pretty sad. I think today captioners are to have their own (costly) software and often work remotely at a PC at home. It wasn't always that way, but now captioners have to have all their own "stuff" at their own expense, most often at home, and then they get the work, usually a pretty heavy work load with deadlines or expected "productivity" per day, etc. No joy.