This is a good point, but I would counter, perceived speed of rendering from a user perspective is more important than time to interact with the app/site (a re

This is a good point, but I would counter, perceived speed of rendering from a user perspective is more important than time to interact with the app/site (a reasonable time to interact is however very important. Good load order and only loading in the content and JS above the fold initially helps a ton. JS frameworks are huge and I am still saddened that proper tree shaking and optimization got left by the way side in how the modern web has evolved. I worked with google closure in advanced modes and the closure components for a few years and the compiler was absolutely astounding (and the components designed with the compiler in mind) in code splitting, tree shaking and minimization.