[ago]

They are bad, but it is better than nothing. I think if you are completely deaf they probably are not good enough. For myself, I have some hearing damage from working with fire alarms without hearing protection which makes it sometimes hard to understand speech with some background noise, it also doesn't help that English is not my native language. These subtitles make some videos that are hard for me to understand much better than without, because I am able to combine the hearing that I got with the subtitles to figure out what is being said. So yea, I hope they could improve them, but without them my experience is definitely worse.