Does someone more fluent know what one would use this for? It seems weird that we had React, which was for web, and React Native which was for mobile, and now

Does someone more fluent know what one would use this for? It seems weird that we had React, which was for web, and React Native which was for mobile, and now we've come full circle to a way to go from a React Native app back to a React app. It feels like I'm missing something.