Who cares if it was an ad or not. The fact is GG was featured in Vogue and found its way onto the runway during fashion week.
He cared - he commented that he didn't believe Google placed any ads in the spread and asked to be corrected if he was wrong.
You posted something that didn't dispute his claim and then ask who cares?
He does (and actually I do) because I was curious as well. Does it "matter" in the scheme of things - no. But if someone asks for proof of something and that proof is not given, certainly they have a right to call the person out on it.