Back in the day, this is how all phones were activated in the US via ESN. Granted they could do only one number at a time back then, but I wonder if the only reason it made a comeback via this eSIM method is due to allowing carriers (and others) to track you better along with the convenience of having multiple eSims (numbers) on your phone, 2 active at a time. It’s almost like they are going back in time now. SIM’s were way ahead of their time. The ease, portability, etc. This is apple doing the “courage” thing again.