YouTube hosts videos that are, on average, popular. This translates into high numbers of views and “I like this” clicks.
Usually there is a small number of “I dislike this”.
On Feb 8th 2015 it had been viewed 84373 times, liked 12 times and disliked 26 on YouTube, that is more than 2 times as many!
The reason is simple: the video is featured on an Easyjet support page. Instead of containing instructions of travel planning, the video is a piece of corporate propaganda.