Maybe once video calls are routinely 1080p/2160p it will matter more, but 320p (the default for most systems today) at a low bitrate isn’t really doing much. You might as well shut it off unless you’re leading the meeting at that moment.
Contrariwise, when you are speaking/presenting, use an external camera (the one in your laptop/ipad/phone is optimized for thickness and thus the lens sucks) and a good soft key light.
I recently did a fair bit of research into this exact setup and landed on a Logitech StreamCam and a Elgato Key Light.
Well worth the money if you’re interested in achieving a high consumer grade level of quality, just be sure to purchase an adapter for the StreamCam as it is (infuriatingly) wired with a USB C connector.