A bit of background.
When macOS Monterey was announced, Apple added an orange dot indicator that appears on top of everything whenever the microphone is in use.
Kidding, it was quite a nice privacy addition actually. We could finally see in realtime when an app used the microphone, and what app that is.
And so begins a detailed article about to hide the orange dot indicator. Can it be done without disabling System Integrity Protection?
What happens when you’re using full screen applications and the microphone is on?
It’s worth mentioning that the person mentioned in the linked article who provided a clever solution to hide the dot is Tyshawn Cormier, who also developed Retroactive, the excellent utility that allows users to run older Apple apps like Aperture, iPhoto, and iTunes on macOS Ventura, macOS Monterey, macOS Big Sur, and macOS Catalina, as well as Xcode 11.7 on macOS Mojave, and Final Cut Pro 7, Logic Pro 9, and iWork ’09 on macOS Mojave or macOS High Sierra.
Very useful stuff.