Why? I don't see any reason for example a company that makes diapers to want their ads running with a marijuana video. In this day and age companies have to be very careful to avoid being associated with anything controversial or political. youtube did the same thing with firearm related videos. They're trying to get ahead of things. Makes perfect business sense to me. But that may be the remnants of the corporate world I worked in for 20 years. If you want to boycott someone then boycott youtube. They're the ones that pulled the videos. Not trying to start a fight or anything. Just my opinion which is meaningless anyway.