I'd love to dive into this a bit more - why do you dislike video calls?
If you feel like it’s wasting your time you are probably in a meeting you shouldn’t be in or it’s not properly organized with specific goals that need to be addressed in the meeting.
I feel like running an audio stream in the background and just do other things is not something that solves that. And why wouldn’t you be able to just minimize the video and do what you want to do if you don’t feel like attending?