Cut to the Chase: JavaScript Bandwidth and Loading on X Platform

https://www.third-bookmarks.win/browser-specific-bugs-exposed-on-twitter-why-firefox-issue-x-and-chrome-only-x-kept-developers-scrambling

How Slow Connections and Heavy JS Make X Platform Feel 3-5x Slower Listen: users on mobile care about two numbers more than your fancy UI — how long until something useful shows up, and how many bytes they had to download to get there