rbb That was my concern with adding an esim. Is it easy to accidentally lock yourself out of the OS with an inadvertent mis-step?
I think a good way to think about it is that it's easy at any moment to disable a physical SIM card by popping it out, so the parallel would be to have the eSIM management software enabled while an eSIM is in use. Otherwise it would be a bit like using a physical SIM card with the SIM drawer glued shut -- OK in theory, but arguably imprudent.