The cause is good, but AMP are overcomplicated. They rely heavily on JS, Web Components, Custom Elements. They need a polyfill for other browsers which don't support Web Components natively. They add too much bloat to HTML: custom attributes, weird <style>body {opacity: 0}</style><noscript><style>body { opacity: 1}</style></noscript>, etc.

Instead, content providers should stick to plain old HTML with a small CSS script and no JS, just like RSS feeds. That would be blazing fast and backwards compatible.