We have video by default off in all of our meetings, and here we talk about top 10 bank in the world and 80k employees. The reason might be due to the fact they didn't provide us laptops with covid (or before), or any dedicated hardware like webcam, so we have audio-only meetings via app calling our phones. Mind you, I WFH on quite high-end desktop with 32" screen and very good webcam for calls with parents.
The benefits are that I don't need to mind what clothes I wear, since comfort is a major improvement for WFH. I can have my child running around while being on mute, dedicating to him small slices of my time. Anybody who has kiddo or two knows how perfectly clean place gets into messy state in few minutes, so there are toys and stuff just lying all around. Being so corporate, 3-5 meetings/day is a norm. I can have the meeting anywhere where phone can ring if quiet enough. If we need more cooperation, sure skype/screen sharing is an option too.
There are almost always more people on the call then really need be, or their time is 5-minute slice out of 30 minutes, so we all still stay in case of sudden questions/brainstorming, but we do our other stuff (and there is endless stream of it). Actually when randomly 1-2 persons come with video, it looks a bit weird. You don't want to study their facial expressions when they do other work, and I've seen a butt crack of a very high manager once or twice on a call with 10+ very senior people. If you think video is helping you stand out and looking oh-so-well dedicated, well not in such cases.
Nobody is bothered by this lack of video, once you get used to audio-only, it works great. I mean we are all adults here, if any doubt or unclarity, why being afraid to ask? There are no stupid questions as we all know.