Did we ever need the react eco system? Was that ever considered performant compared to vanilla js? I went from jQuery to vanilla years ago. Bootstrap went vani

Did we ever need the react eco system? Was that ever considered performant compared to vanilla js? I went from jQuery to vanilla years ago. Bootstrap went vanilla a while ago as well, even before AI coding was a thing. Nobody ever told me a valid reason to look into anything else. But I like doing my magic on the backend, so maybe that's just me.