My eSIM is tied to my phone, phones these days have encryption, so all I need to do is set a lockscreen password then a thief cannot access any of my data.
WRONG
At least in Android: You can just use some button combo (just look up "[Phone model] hard reset") to get into the recovery menu and wipe all data, then reboot, and the eSIM is still there!
(Caveat to this: If you happen to have a Google account, it would force a FRP lock, and that would stop access, but most of fediverse does not like those type of online accounts, so: without a SIM PIN and without FRP locks, the eSIM is accessible to a thief)
Now the thief has your bank 2FA Codes!
TLDR: Set a pin on your SIM cards, even if it's an eSIM (but especially if you use physical SIM cards)
(Curious: Does anyone actually use SIM PINs or do I just have a lot of paranoid regarding tech and potential hacks/exploits)
All bank accounts require a phone number. VOIP numbers does not work.
Online banking through a computer requires a phone number for them to send a 2fa code to before letting you log in. (Phone number 2fa is the only 2FA option, and even if not, its often used as a recovery option to whatever other 2fa method there is, effectively making the phone number the weakest link)
But I guess if you don't like that, you could tell them to disable online banking and avoid using electronics for banking, but then you'd have to either go to the bank every week and wait in an annoying line to verify you're getting paid and that the amount is correct (cuz you can't trust employers)
(Or use the sketchy ATM machine that could have card skimmers and fake PIN pads, can sometimes be much more dangerous than online banking IMO)
(Also some people need online banking like my parent have a small bussiness and my mom has to do a bunch of bank transfers every month through online banking...)