I think 'ex google' has lost most of it's weight. Even if it was just used by any of the > __30,000__ engineers, it would be diluted.
Adding to that mix is non-technical people trumpeting ex-google/insert some other massive company on their profiles/pitches; it just doesn't mean that much.
Oh, you handled frontline customer service/ad sales/some other mundane role for Google? So what?
Getting in to Google was once a sign of something. I don't see it as a high signal filter anymore.