There are many use cases where server components making no sense:

    1. RESTful or API sites that just need a SPA to render
    2. embedded boards that can never run node.js etc, there are millions or billions of them.
    3. Eletron.js or React Native related applications, why do I need a next.js alike component involved at all?

Mixing SPA with SSR into React makes thing unnecessarily complicated, can SSR be an opt-in component just like what it used to be, so us SPA users do not need know your yet another revolutionary goodies that everybody must love it or he/she has no clue what's the best right now?

I switched from Vue to React, now it seems I must switch back as Vue still separates SSR from CSR, god knows how long will that stay.