...almost... i'll accept "an SPA on one server-side route for that one complicated page that's full of bells and whistles."

and then I'm still going to say "yeah, i'm roughly equally verbose and spaghetti-like in even the best most prescient framework from the gods themselves" and merely wish for the means of modularization: breaking my server- rendered page that my javascript "unfolds from" into further little bits that can each have their own smaller less-spaghetti like world without having to try to dynamically load and include javascript on the client. Break it up. Divide et impera...