What is the thing that tells you?
It's called "Google".
Here's the first hit for "early criticism of automobiles":
https://www.saturdayeveningpost.com/2017/01/get-horse-americ...
I am leaving it as an exercise to the reader to verify the extent to which your concerns mirror those of people 100 years ago.
I think the difference is that “concrete/lumber housing” to “3d printed housing” is not like “horses and carriages” to “cars.” Not saying it couldn’t be, but I think the point is that this experiment, although very interesting and cool, does not come close to demonstrating an analogous transformation (yet.)
Arguably, neither did the automobiles when they first appeared.
Nearly 30 years passed from the introduction of Benz's Motorcar (first automobile) to conveyor-belt assembled Ford's Model T (first mass-produced automobile).
It took about the same time from The Mother Of All Demos till the Internet became widespread.
So, let's check back in 30 years
* People have been solving transportation for millenia
* Horses and trains are real breakthroughs
* The complexity of logistical chain (gas, mechanics, paved roads) precludes widespread application where transportation is a basic need
* You need a fleet of other machines to keep it full of fuel. Oats won't do.
* It does not demonstrate a better solution to existing problems