It's 0.16mm thicker than the Air. I've got to admit it was surprisingly pleasant to hold.
I even did a low key bend test and it did not bend, but I literally had store security walk up to me and ask me not to do that.
So I suppose there already is a phone with an analogous form factor.
It just spurred the rage that we still haven't adopted metric in the US -- even after spending a good chunk of the 1970s learning it in school and being promised metric would be the new measurement standard.
In all seriousness everybody still probably needs to learn it in school, because the scientific literature is entirely in metric. Even papers authored by Americans and published by, e.g., the American Chemical Society, all use µg/mg/g/kg and µm/mm/cm/m for their measurements. If you don't have an intuitive understanding of those measurements, you can run into visualization problems.
(It wasn't even told to me that it was the default for most of the world. It was disappointing to learn later how much resistance to metric there was in the U.S.)
Moving the needle on what units people use conversationally is what's hard.
And then Reagan showed up just in time to save us from that Commie nonsense: https://en.wikipedia.org/wiki/United_States_Metric_Board
Are you suggesting they did this because they expected it to bend because it was thin? If so, I doubt it. Regardless of thickness, I suspect security would ask someone not to physically damage their devices.