Not only due (or probably not even because of) Satellite system failure. In order to fight drones flying over the border from Ukraine, Russia implemented new restrictions to cellular connections. From like last 2 weeks they made so that when a sim card that enters russian border, it will be denied cellular connection for 24 hours. This also include russian sim cards that have been not connected to russian cellular network for over 72 hours. Almost every modern car today has a sim that communicates with servers all the time. It is just that Porsche also has this feature that can track car remotely and immobilize on demand. It utilizes this type of sim card. Porsche itself has nothing to do with why they are bricked. It is a byproduct of russian attempts at preventing drone attacks which backfires spectacularly.