Well, considering that said traffic originated from Google, and that Google was under no obligation to send it to OP's page, it's a little more nuanced than "stealing". It just means they sent different behaving traffic than usual - traffic that only touches one article and returns to Google. It might discourage webmasters from adopting AMP though, if they have the expectation to lead the visitor to the homepage or o…
I really love the speed of AMP pages, but I don't like the fact that the server request is proxied through Google. This is akin to an ISP injecting their own little optimization toolbar into pages rendered to the user, except that cert pinning isn't even an option here, since Google is doing the content re-writing at the app tier. They even manage to keep the browser security icon green, creating the at-a-glance perc…
Why would a cached website be shown looking different from a non-cached one?