I think Discord gets the UX right: Default state is mic active. There’s no slash through the mic, when you speak (and it’s above the noise cancellation thresho

I think Discord gets the UX right: Default state is mic active. There’s no slash through the mic, when you speak (and it’s above the noise cancellation threshold) you’ll get a green indicator on your name in the participant list. Press mute, you get a slash through the mic and you get the same indicator, in red, next to your name in the participant list. So in many ways they do both.