[stetrain]

But is that really necessary?

HN for example loads quite fast on mobile. I don’t think there is anything about client-rendered HTML and CSS that can’t be adequately fast even on fairly restricted clients.

Of course you can slow things down with advanced features, my point was that a google-led test for certified “Fast Webpages” that get promoted in search results could have most of the positive impacts of AMP without the strange complexities.