I can see that, but in my experience none of these new frameworks or libraries have had the same impact that jQuery when comparing it to similar libraries of the time. When I came across jQuery that's what I started using and have never considered switching to anything else since. It's only recently that we can start laying off jQuery simply because the native APIs have finally started catching in terms of ease of use.

As for modern frameworks like Angular, React, Vue, and so on; I have used multiples of them, and by the state of the community, I say they are fairly easy to transition from one to the next and none have had the same impact. I would imagine most reasons for changing is either job change related or just keeping up with the latest shiny thing. Heck, in some cases I still use jQuery with some of the new frameworks because it is still easier to do it that way.

You're totally right.

Even if I never had to use jQuery directly (had a short gig with Ember) I can see what it did.

It made JavaScript usable in the dark ages and did it with a nice API.

What do the frameworks of today?

What is their USP?

I mean React, for example, has a nice small API and its component concept is easy to grasp. To create an app, simply nest components, but the boilerplate and understanding required for Flux/Redux obliterates this. Not to mention the whole BabelJSXFlow stuff they have going on (and try to solve with create-react-app now)

It can be rendered on the server and the client can show finished markup and take it over to form a SPA, but as far as I can tell this is mostly a querstion of taste, since it now forces more load on the server.

So I wouldn't say it had too much of a net-positive effect as it could have had.