Just curious.
I used eSim for a while when I first got a phone that supported eSim, because I wanted to make it harder for a thief to disable the phone tracking, but now my main phone is broken and Iβm a bit annoyed at having to chat with customer support for half and hour to activate eSim on another device.
I have no idea why and how you could save them in a password manager honestly.
We use QR codes because when new employees start itβs very easy to just send them a phone and a PDF and not worry about it.