I could see it if it was a screen I get to control, akin to a smart mirror. Fridge door would be a pretty good surface since I'm guaranteed to look at it a couple of times each day.
Other than that, push notifications if the door is open? That's about the max when it comes to usefulness I can imagine. Is that a problem that requires a connected device? No, probably not.
However, depending on the model range, it becomes difficult to even get a model that doesn't have the "smart" features. No one can force you to connect the device though (yet).
Don't spread any misinformation. The price for the theoretical part is 25€.
https://www.tuvsud.com/de-de/branchen/mobilitaet-und-automotive/fuehrerschein-und-pruefung/fuehrerschein-und-pruefung/rund-um-die-fuehrerscheinpruefung/gebuehren
If you take the test 128 times, that comes out to 3200€, a number very similar to the one mentioned in the article.
The article does not talk about the total cost of obtaining a driver's license.