I don't think it's fair to call his comment uninformed based on that link. From your gist: For ease of use, we are including the React, ReactDOM and Babel

I don't think it's fair to call his comment uninformed based on that link. From your gist: For ease of use, we are including the React, ReactDOM and Babel CDN builds to make getting started as fast as possible. In production, you'll want to instead look at using something like Gulp, Grunt or WebPack (my personal recommendation) to compile JSX into JavaScript. Also, check out: http://facebook.github.io/react/docs/tooling-integration.html He did specify "production-ready", after all.