As of at least 6 years ago (when I was last involved in it), the only way to program the Bosch ECU of your $250k Porsche factory-built race car was via a DOS app that was only in German. You also needed a $3k special cable that authorized access to the ECU. You had a few things you could change without using it, but if you wanted to access ALL the parameters, you needed that app. It came on a floppy.
It's very likely that they are running a virtualized OS on modern hardware. If that's the case, it's probably pretty reliable, actually. Insecure as shit, so I hope/assume they have these things air-gapped. But it doesn't mean it's unreliable.
They're probably relying on the security strategy of hoping their tech is so old no one will know to even know to look for it.
AT&T widespread mobile network failures. Their recommendation is "use WiFi calling" except WiFi calling keeps giving "bad gateway errors" Good times!
Change Healthcare, which serves millions of patients for billing, etc. is also down due to a cyber attack. Sounds like it could be exploitation of the ScreenConnect vulnerability.