So I know people hate them, but there are meaningful differences between green and blue bubbles: 1. The big one is obviously encryption, but in the hypothetica

So I know people hate them, but there are meaningful differences between green and blue bubbles: 1. The big one is obviously encryption, but in the hypothetical RCS with actual encryption future wouldn't be as relevant 2. Indicates that the message requires a cellphone (iMessage does not) because RCS is carrier+phone number based 3. Indicates that the message costs money (plenty of carriers still charge for RCS as they do SMS - I have a friend who accidentally spend $5 texting because they didn't realize international messages were "toll" messages not included in their "500 free texts" plans), similarly plenty of carriers charge to receive text messages as well. Even if RCS were encrypted, that does not fix 2 and 3, and RCS is still unencrypted by default and the ability to send encrypted RCS is solely dependent on carriers not choosing to block it because supporting RCS _requires_ supporting downgrade attacks.