The fast, non-blocking content loading is the main feature. I took a radical path when developing my site and made it AMP-first. Instead of having an AMP version of each page, every page is its own AMP version because it's an AMP page.

Even served from my cheapo shared web host and not Google's AMP cache, I have pretty-much instant loading of all pages: http://multithreaded.link/2017/08/lyft-customer-acquisition-...

It's a good framework for building super fast pages. I will admit it's a little riskier to build a site on top of technology a large company owns, but this is a risk that you also have when you use React or other frameworks.