Any multi platform framework will inevitably hit the hurdle of supporting only the common denominator. For many applications this is fine, but for the sake of consistency I hope native applications will still live for a while.
Having worked with React Native and Xamarin: wherever platform specific problems come up, there is some sort of "escape hatch" you can use to tailor to it.
Still room for improvement but it's not so restrictive about the common denominator.
