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Google tries to defend its Web Environment Integrity
(techreport.com)
This is a most excellent place for technology news and articles.
Nothing dense in this, I don't quite know what to write either. In my opinion what you wrote in your comment is just perfect, you're a citizen simply expressing an honest concern, without lying – not all people are tech-savvy. It also makes it clear that it's a letter from a real person.
But that's only my point of view, and maybe I haven't thought enough steps ahead. Let's see what other people suggest and why.