I’m not an expert in the details of Chrome permissions vs. other browsers, and setting aside for the moment the market power of Google/Alphabet, this seems fair

I’m not an expert in the details of Chrome permissions vs. other browsers, and setting aside for the moment the market power of Google/Alphabet, this seems fairly fixable, along the same lines as email spam or ad tracker networks, and a clear case for “caveat emptor”. How about rewriting any AMP urls in the browser location bar to redirect to the canonical location as an end-user extension, or as an in-content script?