This kills 2FA. And makes me wonder if it's just safer remembering private keys and NOT using 2FA.
In my country, there have been several of these sim frauds with people losing money from their bank accounts. The SIM card is linked with everything from the UID to bank account to the Tax identity of a person. Having one of these compromised is a nightmare scenario that I fear none of us are well prepared for.
I mean what really you can do if your network goes offline in the dead of the night? Are there really any mitigation strategies for this?