author here: Hey Adam - Elon has mentioned SMS fraud being the reason for blocking it on several occasions. See here: https://commsrisk.com/elon-musk-has-radica

author here: Hey Adam - Elon has mentioned SMS fraud being the reason for blocking it on several occasions. See here: https://commsrisk.com/elon-musk-has-radical-solution-for-a2p-sms-fraud-twitter-turns-off-2-factor-authentication-by-sms https://commsrisk.com/elon-musk-has-radical-solution-for-a2p.... Re libphonenumber: I think you misread me? I was definitely saying consider it :) I just don't have much personal experience with that approach.