Meta can fuck off.
Why not do it now?
My family uses it, work uses it, Microsoft 2FA uses it. It’s a hassle to try to change what other people use.
Can’t you switch MS 2FA to use text or their authenticator?
I blocked Microsoft in WhatsApp and they reverted back to sending SMS messages. However, this won’t help if you (like me) I refuse to install Microsoft apps on your phone.