Nope, your argument doesn’t hold water: consumer goods have become SMALLER since the 1970s. A TV used to be a foot or two deep. A computer was something that sat on a desk and couldn’t easily be moved. A typewriter was pretty big too. An iPod or smartphone with speakers is tiny as compared to a radio/cassette of the 1970s.
Vehicle space doesn’t play into it. You don’t need more vehicles than drivers, and one should be able to park two of them 🙂
And with the San Diego climate, the lot becomes an extension of the house 95% of the year. One can also put down a “temporary” storage shed if they’re into things like motorcycles and sailboats. Those are the toys that haven’t changed in size, but people had them in the 70s as well.
I’d have thought that you were smarter than to believe the “bigger is better, must renovate” HGTV propaganda.