in the article https://leblogderames.wordpress.com/2016/12/17/couper-les-coupures-wifi-sur-raspberrypi/ the Raspberry Pi is used as a client computer. With a client computer it is very useful that the client computer automatically switches down from working mode to power saving mode ore sleeping mode. When you click the keyboard the client computer wakes up. Yes, you can't click the keyboard from remote.
The MoodleBox is a server computer and my MoodleBoxes newer switched to power saving mode.