Well, I have worked with two of them React and Angular. Now working with React. And the further the project goes, things just get messy, and I mean really messy. The concept of everything should be a small function is in practice not true. No dependency injection(I know you can bolt another library on top of it, but really?). The testing is a pain, it gets harder and harder to test isolated functions. Custom tags, attributes that look like the standards that are documented at MDN but are not. And most info I can find online feels like elaborate propaganda. I mean there is just nothing against React to be found, really nothing. That's just not possible in IT.