> Machine transcription is available but still fairly technical.
This isn't really true, on YouTube it's basically a check box[1]. Admittedly the quality isn't always perfect but it's trivial and better than nothing.
It is not better than nothing if it actively confuses the listener. I experienced this recently when I uploaded something that got captioned automatically without my knowledge (new rollout of automated captioning on a university content management system, not YouTube). I got a visit in office hours from a confused student who said he'd spent significant time looking for African and Afghan linear spaces and simply could not find the definitions.
This isn't really true, on YouTube it's basically a check box[1]. Admittedly the quality isn't always perfect but it's trivial and better than nothing.
[1] https://support.google.com/youtube/answer/6373554?hl=en