We feel the same about the EU and all of the "THIS SITE USES COOKIES" banners.
It shouldn't be terribly hard to isolate the effects to browsers that request language-locale tuples from the US or run the JavaScript conditionally on the browser if the locale+timezone is set to something in the US.
I understand the frustration with making content region-specific, but the less annoying cookie-law banners irrelevant to my jurisdiction on the web, the better. I'd be personally fine with that sort of location-based variance: it's not that different from setting a default weather location for a news website, for instance.
It shouldn't be terribly hard to isolate the effects to browsers that request language-locale tuples from the US or run the JavaScript conditionally on the browser if the locale+timezone is set to something in the US.