All the big names quietly or publicly abandoned their efforts to fully migrate to React Native, focusing only on the most simple use-cases/views if they do keep it around. Even with the smartest people working on it, it's tough to keep React Native performant.
Sorry I didn't express that clearly FWIW, didn't mean that literally.
It's just that most apps people use are pretty much the same as their respective websites. All of FAAMG's websites work as perfectly fine replacement to the apps, even better, IMHO, when you get rid of the ads apparatus.