To me this is better than amp - give me clear messaging around a site's performance rather than mandating a platform that gives the site less control. I certain

To me this is better than amp - give me clear messaging around a site's performance rather than mandating a platform that gives the site less control. I certainly worry that there's the potential to abuse this, and I also wonder if Google's own sites (i.e. amp pages) will be biased. To their credit they're showing one of Google's own pages as being slow in the example, but I'd be interested in seeing a 3rd party analysis of what pages are considered slow and which aren't. Another part of me worries that this will lead to a cobra effect[1], where people optimize a page's first load so Chrome says the page is fast, while withholding the main content of the page for a delayed load, leading to even more site bloat. Identifying when a page has actually loaded will be tricky. [1] https://en.wikipedia.org/wiki/Cobra_effect https://en.wikipedia.org/wiki/Cobra_effect