The silent down-voters are more likely site owners who feel they are being coerced into using AMP in order to compete in Google's search rankings, or users who

The silent down-voters are more likely site owners who feel they are being coerced into using AMP in order to compete in Google's search rankings, or users who feel they are being forced to visit AMP sites (which have various usability or privacy concerns) due to these site owners being coerced. (For what it's worth, I up-voted you).