Although that story only relates to the on-board computer, that is a concerning development.
Last new GM car we bought, the sales manager who did the 'new car handover' when my wife collected it from the dealership lifted the hood, indicated the dipstick, oil and water fill caps and said to her "you're only allowed to touch those, but even then I recommend you never look under here, just bring it back for scheduled services".........
Suffice to say when she told me that, I vowed to never take the car back, and worked on it myself.
No wonder when I have to get my work-supplied vehicle serviced, there's never an old-school mechanic with oil on his hands in sight, just young kids who are labelled 'technicians' and carry a laptop and OBD plug......