@zens I agree with you that most features of content website shouldn’t be implemented using a framework such as React/Vue/Angular.
But I disagree they are good for Facebook or Twitter: these companies can afford top developers able to do high performance web apps, and these frameworks are not fast enough for such heavy SPAs. As far as I remember, the use of React is marginal at Facebook since a couple of years. And Twitter for web has always been slow on phones.