Earlier quoted context omitted.
What they need to add is a physical electric switch to turn off the cam/mike. In any case, because of all my remote collaboration these days, I bought a decent mike on a boom to use, and my colleagues say it is much better. Still have to find a decent camera.
Many "real" camera manufacturers (at least Canon, Nikon, Sony, I think Fuji as well) have released software during the past six months that allow many of their existing system cameras (DSLR or mirrorless) to be used as very high quality webcams. Likely overkill if all you need is a webcam, but might be worth considering if you also need a camera and/or happen to already own a compatible one.
Ideally you want a camera that does clean HDMI out (no ISO indicators etc), but even that can be worked around if you run OBS studio and crop it out.