Aren't we just embracing the difference between a site and an API? It's hard to do both well at the same URL. The API provides the repurposable content in an open format, and the site itself is free to experiment with different presentations. Is that so bad?
Before devs started experimenting with client-side rendering, all sites' content was amenable to the same set of tools. Now there are more and more services with broken frontends and unique APIs which are incompatible with everything else and aren't even stable—when you can rev your own client js instantly, you don't know or care whether any other clients broke. I'm stuck using only one client (your js) that works at all and I can't fix it, which is almost everything that client/server got wrong the first time around. It's not impossible to carefully implement a stable form-compatible API in common with a bunch of similar sites, but I don't see it happening.
