I replied to one of your other posts about how great I think React development is, but I want to also state my wholehearted agreement with this thread. For things you would use a SPA framework for, it’s really the types of thing that are apps that happen to be hosted through a web browser. They’re very distinct from web pages. Most user facing websites should be built with backend server processing and js/query. React is nice because you can progressively enhance particular components, so it works well as a complement to a backend language, but in that case the tooling overhead is pretty high for what you get. So in those cases I typically go the jQuery route as well.