Yeah, so in typical modern day fashion get ready to lose functionality.
They often trade UX for “pretty” these days and I find most apps and websites horrible to use in comparison to 10+ years ago. Like everything has to be in a context menu for some reason now.
No… RCS is a protocol (from GSMA) anyone can implement, Google just spearheaded it and developed Jibe to make it easy for operators to implement, but by doing this it means Google gained a lot of control of it and added their own features to such as end-to-end encryption.