1: Granted, that had some key foreign influence.
America gets bashed non-stop about pretty much everything, no matter what choices it makes or what direction it goes. The criticism is overwhelming sometimes, I get sick of browsing many sites like Reddit for example because of the extremely common US bashing. Quite frankly, I'll take the cheers and USA chants on this one.
In this context it didn't phase me at all (I am a US citizen though...), but at a Google press event, it would be really unsettling.
I don't know, but the point is that I can see where you are coming from. I think that the "USA" thing has become "normalized" to me because of other things in the media (sports, wartime, etc...) that it doesn't phase me, but changing the wording makes it pretty clear.
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[1] I probably wouldn't think much of a USA chant during a Facebook or Google product launch. While these companies do plenty of wonderful things, I view space travel as several tiers of importance higher.