if a framework or library wants to own your app because it is top-down it is difficult to introduce into existing development. with react because it is only the view in the first place you can include it step by step bottom-up. i think that is why many people adopt it.

i think it is the misconception that technology is your concern. but it is not. the domian is our concern. the tech is only a tool. a detail. so separation of concern is not separation of technology.