@[email protected] keep in mind, that it isn’t always e2e encrypted on Android (not for SMS and for RCS it depends on the used mobile ISPs gateway implementation (if not jibe) and on the remote devices. So, depends of this is really a pro instead of cons on the point of view.
@[email protected] One reason for “Telcos cannot be trusted” is being forced to assist lawful interceptions. And back in the days where SMS has been frequently been used on the SS7 protocol via UCP and SMPP, every hop could read everything in plaintext (still today). However, e2ee with vendor pre-generated keys (e.g. IMessage) isn’t really better - you can never be sure that not somehow an additional key for encryption got created. People may now say use opensource and right, this might be better…