Google AMP lowered our page speed, and there’s no choice but to use it
AMP is a set of rules that publishers (typically news and analysis content providers) must abide by in order to appear in the “Top Stories” section of Google’s search results, a lucrative position at the top of the page. From instant answers where users read content scraped from your site without visiting it, to Google assistant reading your site with barely a nod in your direction, to AMP with plain, samey sites served on different coloured paper, and from a Google domain no less, they want people to visit Google. If Google’s users were all served by scraped content in Instant Answers and Assistant answers, and dull, non-interactive websites served from Google’s domain, publishers become nothing more than a dumb pipe.
Source: unlikekinds.com