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”.
easyJet Hold Luggage Allowances Explained
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.