Although I can tell this video is a piss-take, generally speaking, the Dutch really do have amazing English.
That is both a blessing and a curse if you are a foreigner living in the Netherlands. Even when I tried speaking Dutch, everyone reverted to English when I tried to speak. I miss my Dutch friends, though when they'd get too drunk everyone would be speaking rapid-fire Dutch and I'd kind of stand around with my proverbial cock in my hand, looking like a wanker. Had some Gezellig times though for sure!