[gorhill]

Using this means `ampproject.org` will be able to build a profile of your browsing history to any of the AMP partners' web sites.

I suppose referrer spoofing could help mitigate this, but then I suppose other browser fingerprinting techniques, if any, could counter this. Bottomline, having one server contribute resources to all the pages you visit is a significant threat to privacy.

Just using a competent blocker nowadays easily takes care of the page load speed issues -- which is the advertised benefit of AMP.

Addendum: basically, if you are already using an extension which purpose is to reduce privacy exposure, installing this extension (DesktopAMP) is self-defeating.