This exact feeling can also apply to Giant Bomb. They often have an opinion and then you'll see people on here, mimic them almost word for word.
They don't give out qualifications for opinions on games and that is all a review is. For every irritating asshole you see on youtube theres probably one on there you'd like and can relate to. I think a 'let's play' is the most creatively bankrupt form of game coverage, many would agree, except maybe the younger crowd. Thats all an ER is though.
I think they should push transparancy on youtube and give a heads up on marketing deals etc. But you could click on something like IGN and be told by one of their editorial team to "believe the hype". There are no credentials, just find a group/someone you trust, like we have with GB. Plus I think we're getting to a point where instead of the youtubers trying to compete with the big sites, but rather the other way around. GB and Jeff in particular are super smart and saw this a long time ago, hence the evolution of the quicklook and personality based stuff. They are already their own youtube.