I just did. 3 minutes wasn't that bad and I wasn't somewhere where it would be a problem.
> Why do sites do this?
NPR is a radio network. I have seen that often they do transcribe their clips. I am not sure what the process they have for that looks like, but it seems this particular clip didn't get transcribed.
Edit: looks like they do have a transcription mentioned elsewhere in the thread. So seems like some kind of UI fail.
edit: looks like there's a text version of the article. I'm assuming this is a CMS issue: there's an audio story and a "print story", but the former hadn't been linked to the latter: https://news.ycombinator.com/item?id=23628790
https://www.automaticsync.com/captionsync/what-qualifies-as-... (see section: "High Quality Captioning")
I am not aware of many TV shows that offer audio commentary for the visually impaired.
Here is an example of one that does.
https://www.npr.org/2015/04/18/400590705/after-fan-pressure-...