Captioning and subtitling has taken a direct hit from AI tools, but about half of it is from clients severely reducing their quality standards.
Back in the early 1990s the widely referenced BBC guidelines required 99.9% accuracy overall. Nowadays it is assumed that viewers will be used to and understanding about frequent errors, and that you don't need to take pride on your product to keep them in your platform.
I've been watching quite a few old BBC series on iPlayer and something they did a lot back then was paraphrase the dialogue to reduce the length of the subtitles. They tended not to have spelling mistakes or comprehension errors, but they weren't accurate.