Re-reading my comment, I see what happened. I didn’t specify “RCS on iOS…”, assuming it would be implied based on the thread topic. I have made the edits.

From the way article is worded, I thought maybe they finally added schedule send for imessages, but somehow excluded it from RCS messages.

“RCS chats are still missing many features Apple bakes in for iMessage conversations, like being able to schedule messages to send later”