Remix, along with the other frameworks/libraries you've mentioned, are very interesting. I've considered trying out SSR with Quasar (the Vue framework I work most in), though selling it to "business" is hard and I understand why, I can't bring myself to eat the cost (both time and real dollar cost) on my own projects. I do hope SSR continues to advance, though I have some trouble imagining a "free"/"seamless" fallback for no-js users and so other than initial paint I'm not sure how functional some sites will be.

I specifically called out "web apps" in my first comment as I do understand the value SSR brings to things like blogs, news, or other simple sites where JS is not needed, or where it can have a clean fallback. On the other hand, I write "apps" (sometimes deployed on phones via Quasar/Capacitor as well as on the web) and those get much more complicated. I'm not quite sure how modals, WYSIWYG, rich date pickers, etc translate for a no-js user. Simple navigation is easy enough to grasp but my understanding is that things like NextJS/NuxtJS are really just for first render/paint and then React/Vue take it from there. I could be behind the times on what's possible without JS and using SSR through. I just know the PHP codebase I also work in uses plenty of JS to be functional (not above and beyond, literally "table stakes" stuff).