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Google does have a section within their guidelines on creating "HTML Snapshots". "If a lot of your content is created in JavaScript, you may want to consider using a technology such as a headless browser to create an HTML snapshot." https://developers.google.com/webmasters/ajax-crawling/docs/...

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Did you read that page, or did you just skim it? They're telling you to use a "headless browser" as one possible (clunky) way of responding to _escaped_fragment_ requests, which is a workaround wherein you put a special tag in your original page to tell the googlebot to make another request to get a static version of the page.

Using _escaped_fragment_ is not the same thing as rendering different content based on user agent.

Well said. Really not sure why your parent is recommending against this, when Google are recommending in favour of it in their webmaster docs ...

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