* The author seems to be a bit older * The author drives an older car at home
As a younger person who drives an old car, I too had to spend some time reading the car manual to figure out how to adjust things like automated breaking and steering assist when I rented a new model Camry on a trip earlier this year. The Tesla likely has even more features, but the idea that you can just jump in to a brand new car and understand everything about how to use it seems far fetched.
Couple that with someone who is older and perhaps doesn't have as much intuition for digital user interfaces and you get what's in the article.