I’ve been consulting and presenting on captioning access for over 10 years, written a book (currently it’s undergoing a new edition), and given a TEDx talk about this. I’ve also seen many podcasts, videos, and events that are either not captioned or have captions that are not easy to read due to poor formatting.
Lipreading is challenging enough for me as a deaf person. It gives only about 30% of visual information and the rest is a lot of guesswork and filling in the blanks. When a person wears a mask, it’s a nightmare for me as well as for many other deaf and hard of hearing people. It’s difficult even for those who wear hearing devices.