[tomphoolery]

> Am I incorrect in assuming that you could implement your entire server-side js app now as an nginScript module? Do people think that is a good thing?

This is kind-of already possible with OpenResty: https://openresty.org/

You can also use Lua, a programming language more than capable of producing efficient web application backends, directly in Nginx config files: https://www.nginx.com/resources/wiki/modules/lua/

So...in a way, this has really been possible for a long time. I'm not disagreeing with you, because personally I'd much rather build my web app in a language and toolchain that's easier to work with, but I find it interesting to read about.