I note the blog post relates to MacOS.

I regrettably had to install Zoom on my Mac because so many people use the service.

However the Mac makes it an easy process to block microphone and camera access. So when I don't have any Zoom meetings scheduled imminently, I just go to System Preferences -> Privacy Settings and kill off Zoom's access there. Only takes, what 5-10 seconds. I guess I could even script it via AppleScript (or potentially CLI), but have never had the time to investigate.

One of the best things about Apple MacOS and Apple iOS is the centralised privacy settings that make it easy to see what has access and easy to turn it off.