Memri is a legit organization, I think. They've been doing this for years, and I think they're British based, which means they'd get in a shit-ton of trouble if they were simply making things up for the subtitles because of the way libel laws work there.
That said, I don't know how much stock you can put in a random youtube video. Just 'cause one guy says some stupid shit doesn't really mean much.
That said, I don't know how much stock you can put in a random youtube video. Just 'cause one guy says some stupid shit doesn't really mean much.