Errr, have they ever had the misfortune to watch any of them?
"Vloggers build their fan base on the originality and authenticity of the material they produce."
As I have teenagers in the house, I've endured a few of these so I can gauge the kind of content on show and they're just copies of each other. One person will do something that's been done by everyone when they were little and then the rest will all produce similar shows over the next few weeks.
Fair shout to them for making the money, but they're not doing anything special, they just jumped on the bandwagon before it came into view.
Oh and even though the kids are stupid enough to watch them, I'm pretty sure they know the sponsored videos when they see them. Nice sour grapes from the BBC.