If an attacker is at the point where they can turn on your microphone, or video, it doesn't really matter anymore, it's been game over for a long time.

This never really registered to me, before a former colleague commented on the nonsense with people putting tape over their camera. If an attacker has access to your camera, or microphone, then they have access to pretty much very thing else. The difference in damage is negligible, it's already total for most.

If people are truly concerned about the camera in their laptop, then keep the computer in a dedicate room, shut it down when your done (or close the lid, if it's a laptop).

Sure it's kinda dumb that the LED is software controlled and that there's not a physical switch for turning off the microphone, but even having those things done correct doesn't negate the amount of damage someone could do with they have that kind of access to your devices.