I don't buy that logic. How is it cross-platform? (It technically is, but c'mon. All of these OSs are in the walled garden.) I agree about RCS requiring Android, but that doesn't really put it lower than iMessage, since that also requires you to buy a device. (iMessage does have more features, though.) Apple has promised to support RCS in iPhones, so this should soon change. Also, why would iMessage be rated higher than Signal using this logic? What's easier, buying a device or installing an app on your existing device? (If someone doesn't have any mobile device, I don't think they really care about messaging anyway. So I don't consider that as a proper prerequisite.)

First off, how can you claim RCS "requires you to buy an Android and then state iMessage is "cross platform through Apple's ecosystem? RCS works on Android and is available in various devices from many manufacturers. iMessage is only available on devices sold by Apple.

Secondly, why would you rate iMessage higher than RCS for "ease of use"? That makes zero sense, they behave basically the exact same way.

Lastly, RCS is coming to iOS - Apple's just been lagging because implementing a cross-platform solution is detrimental to their profits.

So RCS will eventually work across iOS and Android AND work by default. There's no reason RCS wouldn't be easier or rated higher than iMessage in terms of "ease of use"