Thank you for that.
In the embedded video, the Enve engineer says multiple times that they test to ensure the tire doesn’t blow off until at least 1.5 times the max pressure of the rim or tire (whichever is lower). Just like I said they should. 
But then they drop this bomb in the article 
ETRTO specifies a huge number of constraints for rim manufacturers, but not tire manufacturers. In the interest of consumer safety (and, of course, limiting liability), ENVE tests as many tires as they can get their hands on, to ensure that they’ll stay safely mounted to their rims. They shared the results with us, and we were shocked to see a huge variability in both tire bead diameter and stiffness. We’ll share data as we get it, but take our word for now that tires are far from created equal.
Holy 
!!!
How does (did?) the European Tyre and Rim Technical Organization not have standards for the two most important factors in tire safety, which are keeping the tire on the rim.
It’s worse than I thought. That’s beyond shameful.