Sure, and React is the best way to show a message in response to an input in a web form, right?
Let me tell you some news, they just launched an integration of this new HTML <form> thing with javascript, so you can have JS listening to inputs and displaying information anywhere on the page. Cool, isn't it?
Ah, but the sad part, again, is you don't get to download an unnecessary library for that. It comes baked and activated into all browsers by default. It doesn't make your resume shine, either...
(P)React is the best way to do it in a maintainable, easy-to-reuse, easy-to-understand, extendable fashion, indeed. Show me something better and I'll jump on it.
I don't care about resumes, I own my consultancy. I care about quickly solving business problems for my clients, not making new problems in the process, and reusing the solutions. I am not paid hourly, I don't make money from fixing spaghetti code broken by adding a stateful form control elsewhere.