Yes, although many people probably don't know the difference between SMS and RCS and use SMS to refer to both.

Even tech people? wowe

You mean that group that still calls TLS SSL even though its been 26 years?

The important part is its use. You could call it magic key negotiation and I wouldn't care. RCS and SMS are fundamentally different technologies in every way.

They are presented to the user in the same way. They serve the same function. From a user perspective, its about as different as http2 is from http1.1 or 3. (I.e. very different under the hood but not in a user visible way)

Since when are we mere users?

Job security for me I guess lol thanks

Yes, sorry my bad.