I don't think adding RCS support is going to instantly solve all the world's ills but Apple is pretty explicit about their reasoning for not supporting RCS: to

I don't think adding RCS support is going to instantly solve all the world's ills but Apple is pretty explicit about their reasoning for not supporting RCS: to create a specific and exclusive messenging experience on their phone. This exclusive experience is causing just another thing kids can be assholes about - they are currently and will forever continue to be assholes about a lot of stuff but this particular one is one artificially created by Apple to benefit their profitability. I'm sure in their internal meetings they like to think that exclusivity will only really affect adults and that we're mature enough not to bully each other (which, we mostly are, since the behavior we most bully as adults is bullying itself) but this exclusivity also affects teens that are far less mature. Personally I'd also love it if everyone moved off SMS/RCS in general since it's billed as an extreme luxury by carriers but I don't know if we can make that happen when Messenger comes pre-installed on iOS devices. I don't assume that fixing a bubble color will fix all bullying but I do stand by your interpretation that I find that changing the color of a bubble will stop all this sort of bullying.