React's functional components and JSX abstraction lend to it's ability to render to any target, which is powerful in and of itself. Furthermore since they are all-in-one functions or classes, they are composible and flexible in a way that Angular components are not. The component is the core of a complex UI program. Worth the up front cost of researching the top one or two solutions for forms or CSS management, and gaining all the benefits of the massive React ecosystem, in my opinion, as well as having the flexibility to evolve more easily when things change (as they always do), than buy all in on a framework. Especially for long lived applications, flexibility and adaptiveness is paramount.