> I’m sure it’s very powerful

JSX is only appealing to a webdev community. Modern native react-like UI libraries are perfectly fine without XML-like syntaxes: Flutter[1], Jetpack Compose[2], SwiftUI[3].

1. https://flutter.dev/

2. https://developer.android.com/jetpack/compose

3. https://developer.apple.com/xcode/swiftui/