Ok, it's still absurd to me that RCS or Google Messages weren't E2EE from day 1 given even iMessage was doing E2EE group chats almost 5 years before the RCS "un

Ok, it's still absurd to me that RCS or Google Messages weren't E2EE from day 1 given even iMessage was doing E2EE group chats almost 5 years before the RCS "universal" profile was released so its not like they didn't have time. Similarly even when google's message platform did add encryption the fact that it wasn't always on is unconscionable. How does google messages (gMessage?) indicate which messages aren't secure?