I don't think they're saving that much by ditching them and going to SW.
They also didn't need updates (well, the Bluetooth module may have, but nothing else).
It definitely was nice not to have to worry whether the climate control may stop working because the radio was modified. Or because of any update.
As a driver, dumping everything into one SW system has significantly degraded my experience. What I gain ("Ooh, I can now use Waze on a bigger screen!") is minimal.
> The latter can be done with a CI pipeline for pennies worth of compute in a fraction of a working day.
I'd appreciate the point if they were successful at it. As it is, they're not. It's rare to find a non-buggy car.