IIRC, using a Google Voice number for your 2FA was considered a security best-practice. Jack Dorsey himself got his account hacked via an SIM swap on a typical mobile carrier.
So of course Musk broke that functionality, presumably in the name of collecting personal data for exploitation.
https://www.engadget.com/twitter-google-voice-2fa-authentication-sms-195145660.html?src=rss
consent.yahoo.comEngadget is part of the Yahoo family of brands
@maxkennerly @SwiftOnSecurity Anyone still with an account on #FoulFowl should remove their phone # and add in a 2FA app like Authy.