> That is certainly true. But don't overlook the value of expertise in a native platform instead of just one set of abstractions that run on top of it.

This applies to the web, too. A dev who has a good grasp of of the fundamentals (HTML, CSS, JS), the DOM, what does and doesn't trigger a repaint, etc is going to be able to take a React project a lot further than a dev who only knows how to use React.