Doesn't "is operating" mean it's only illegal if turned on?

27602. (a) A person shall not drive a motor vehicle if a television receiver, a video monitor, or a television or video screen, or any other similar means of visually displaying a television broadcast or video signal that produces entertainment or business applications, is operating and is located in the motor vehicle at a point forward of the back of the driver’s seat, or is operating and the monitor, screen, or display is visible to the driver while driving the motor vehicle.

Isn't Glass always turned on and waiting for user input? Does "is operating" mean the device is powered even if it's not doing anything?

These are some of the things the courts have to figure out.

Parent was probably referring to @outside1234's assertion that dash-mounted monitors are illegal even if turned off.