In May, Google launched new metrics called Web Vitals. Combining existing experience factors, these will inform the page experience update.
No more AMP requirements for Top Stories
You can find another interesting tidbit regarding the page experience update. Google will no longer require AMP for getting your news pages in the Top Stories section. Now, any well-built, Google News-validated site can aim for that top spot. Page experience will become a ranking factor for Top Stories, so your site better be good.
That only appears to solve our problem.
We need AMP because the MobileStyle of XF is very slow compared to the Desktopstyle.
As long as XF doesn't change this, AMP will still be needed to compensate for this because speed is still a big factor in ranking ...