The second article fails to mention the country of origin. It wouldn't surprise me if more then 20% percent of Chinese use a VPN, however, but I still don't think many in Europe use it because we don't have censorship. In some countries, a few YouTube videos (that contain copyrighted music) are blocked, however, people don't use a proxy to watch them. They have a browser plug in that uses a proxy to load the blocked videos (and only the blocked ones). You can't really say that someone is hiding their IP if the only use a proxy to watch a YouTube video without really knowing nor explicitly selecting one.