If you're mute and start talking (or even if you just clear your throat), the Zoom app shows a pop-up that reminds you that you're muted. I can see why this feature may be useful for many people. Sometimes it's easy to forget that many people don't know how to use the most basic apps.

Conceptually, it's similar to Apple always listening for "Hey Siri".

But the huge difference between these two cases is that most people will probably trust Apple more than Zoom, which is understandable.