The Nissan Connect stuff doesn’t work anymore for any of the 2016 Leafs, they used a form of cell service that is no longer in operation.
I swapped a nice Kenwood head unit into my Leaf for a couple hundred dollars. It maintains the backup camera, steering wheel controls, and the built in USB port while offering a larger screen and touch screen controls for Android Auto or Apple Car Play if you want them. It’s awesome and I highly recommend it for anyone who wants a short range commuter car.
My kids have child phones on Google Fi which allows me to shut down their Internet with a couple of button presses. Are they simple devices if I geofence their internet access off while they’re in school? I somehow doubt it, but it does meet the definition as you’ve stated it, which in turn means it is as @originalucifer said, not exactly cut and dry.