Google have a problem with AMP, by its design it collects the kind of data no one wants collected. As around 90+% of the web is actually wordpress based, they got a problem. Wordpress is silently against this, or more accurately the large theme suppliers are against AMP (its a mare).
I think AMP is heading into trouble, It dosnt help designers (far from it), but it does allow more data collection without slowing load speed on phones. Do No Evil seems to have massively changed. Its likely if enough people drop AMP then ranks wont matter, google breaks enough competition rules as it is.
I dont understand why they havnt had youtube taken off them.