Yep, I tested with my 21 Ford and removing the TCU (telematics control unit, that acronym should be general to most of the industry) disabled cell communication but didn't impact operation of the vehicle.

I did end up hooking it back up to re-enable remote start since I'm in a cold climate, but I couldn't help myself but test this. Something mobile like a car can't assume connectivity, although I have heard reports of people stranded when using rental services that rely on cell connection.

Forum confirmation here: https://bobistheoilguy.com/forums/threads/disabling-fordpass...

Of course they can, the car will check in at least once every few months, so you can go without internet connectivity for 30 days or so without problems.

Almost everyone will get within range of internet at least once every two months, so few Wil notice or care that the car requires constant contact with the mother ship.