That is how it works with my operator. Once the eSIM is activated, it's tied to the phone. But I'm not ruling out it's possible to make the QR code "reusable".

That is how it works with my operator. Once the eSIM is activated, it's tied to the phone. But I'm not ruling out it's possible to make the QR code "reusable". Getting a new eSIM is not terribly complicated. But you have to log in, click through some menues, wait for an SMS code and an email to arrive, wait a couple of minutes.