I don't think it comes from that. Every new model release for, let's say, BMW needs to pass all tests from anew, as it's considered a new vehicle. It makes sens

I don't think it comes from that. Every new model release for, let's say, BMW needs to pass all tests from anew, as it's considered a new vehicle. It makes sense to require homologation for aftermarket parts i would say.Same should be required for any companies OTA updates, just like one update can fix issues, a single update might also cause issues for every car in the fleet.