I’m terrified of losing access to all my stuff because of forced 2FA I never signed up for. I get that it’s more secure, but it can be secure to the point of having unrecoverable data. All it would take is someone carelessly deciding to get a new phone number. I have a friend who recently talked about wanting to get a new number with his new phone. I asked about 2FA and he seemed to have no knowledge of it and said he didn’t have anything like that. He kept his number, but if he didn’t, I could see him easily getting locked out of his Apple account (which he has), and his bank.
If you have recovery keys enabled, it’s a different story. Enabling screen clearly states that you can get locked out of your account without your recovery key. You can set up recovery accounts too, like those of your family members.