He's not wrong. If you disable JS by default tabs will take much, much less RAM. Sites that require JS aren't worth the time anyway. Unless you're literally writing an application there's no reason to require executing code to render in text and images. And there's absolutely no reason to not have a no-JS fallback. In fact, there should be a real HTML skeleton first upon which you write JS enhancements.
But these are all things you do if you want to make a webpage for people. If your main concern is corporate profit or saving institutional funds then SPAs and requiring JS for obfuscation makes sense in the anti-user way that corps trend to. It's just faster. Who cares if it's anti-user when profits are on the line?
