I didn’t say it was FOSS. I said that unlike iMessage, which Apple refuses to allow Android to use, RCS is available to be used by Apple if it so chooses.

Yes, a FOSS protocol/standard would be better, and I hope we have one done day that is actually available and used by default by both iOS and Android (and any other future players in the field). But until that happens, RCS is at least allowed to be used by other companies so it’s at least a small step in the right direction, even if Apple continues to stubbornly refuse to use it.