The developers of those platforms created distinctive OSs with distinctive features. They would certainly dispute that "90% of apps out there don't need that level of control." Their point of view is that they are innovating in the OS, and apps that take advantage of features unique to a platform will have an advantage over those that don't. On Android, there is no cross-platform equivalent to Android IPC and RPC mechanisms. No Android Wear or Android Automotive. No Android TV UI. No cross-platform printing. Etc.

If you don't need to push the features envelope of the mobile platforms you are targeting, and if you are OK with having L&F that isn't native, and if you are OK with the pace at which your cross-platform tools chase the native platforms, then cross-platform tools like React Native can be fine for you.