They've fixed that in later models, disconnecting the module disables the dash now.
But don't worry, the FTC is out to protect you. Their settlement with GM says that can only sell your name attached to zipcode resolution location data and only sell your precise location trace attached to an opaque ID rather than your name.
I've reliably disconnected Toyotas and VWs by pulling the cell antenna connections from the telematics modules in the dash. The GPS antenna is separate and still aids in carplay navigation.