[untog]

> Less JavaScript bloat, I think. AMP is mostly static content.

That's actually completely untrue. Every AMP component is a web component and requires JavaScript in order to run at all. And many have their own .js file powering it. You literally can't use an <img> tag on an AMP page. You have to use <amp-img>, which has a JS dependency.

OP is right, the primary reason AMP is fast is because Google is preloading the page in the background. AMP pages themselves aren't all that static, or really all that bandwidth efficient.