Over the past few years I've refused to watch CoD multiplayer youtube besides what the devs are directly involved in and NickkyyHD's 'The Catalyst 3' (which was artful).
I'm hyped enough from the official marketing trailers. The dev's use of youtubers to advertise has become a complete spoiler for me and that isn't only subject to CoD. I also get turned off by their personalities and the idea of their impression/critique any more trustworthy or holds more weight than anyone else's.
There is nothing they could say that would deter me from buying the next game and since I'm hyped already... I'm going to keep it that way till I get my hands on it.