The UI pattern of a button with a crossed-out camera/mic always makes me think twice: is it a status indication that my camera is off, or is the button's action

The UI pattern of a button with a crossed-out camera/mic always makes me think twice: is it a status indication that my camera is off, or is the button's action to turn off my camera (meaning my camera is on)? I cover my camera to avoid that 5s mental dance at the start of every meeting.