This is an extremely strange rewriting of history in which Google is some kind of altruist, moved by the plight of suffering school-children in a brief period where the rich bullying the poor (something truly shocking and unprecedented) over the color of their messages simply couldn't be tolerated any further.
Yeah what would really get me onboard with RCS if it were actually open, if I could choose which RCS provider I wanted to use. Like a privacy-driven foundation similar to Signal. Someone I could actually trust.
But that would mean that the entire protocol would have to be made open including E2EE, and that other parties besides Google and the telcos would be allowed to run servers. Those things are very unlikely to happen.