So why do any of the things mentioned in an article need any form of network connection? All the monitoring could be done at a standard mechanic like how cars

So why do any of the things mentioned in an article need any form of network connection? All the monitoring could be done at a standard mechanic like how cars are already checked over, the unlock system doesn't need to work over more than a few metres (what's the chance anyone is going to want to legitimately unlock a car from miles away?) and stuff like the entertainment system could be kept self contained. Then it wouldn't be an issue how 'insecure' the OS is, since a thief would have to be physically near the vehicle to do anything. But hey, thanks to the obsession with 'smart' devices and the internet of things and all that stuff, everything seems to have an internet connection chucked in for no real reason.