I don't get the RCS hype. I already have apps for rich messaging and RCS offers nothing for me over those apps. What I do appreciate is SMS, which is posed to be killed-off by RCS. I can rely on SMS even when there is no data signal, can't say that for RCS. I wish I had a way to permanently disable RCS on my Pixel 6a, instead I have to keep rejecting the 'upgrade to RCS' dialog.
The hype is because America won't switch to Internet messaging by default and only wants one app to message with. So SMS is the only primary option for that. Meaning lower resolution media, and a lack of modern features like read receipts and typing indicators.