I see what you mean, but I think the problem with a lot of career criminals (i.e. mafioso/drug dealers) is that this is just a part of the pathology.

They rationalize that they are actually good people, that without the mafia the neighborhood would be worse, that that guy had it coming, better they buy drugs from me than some unknown chemicals from the chinese, etc. etc.

Cooking on youtube is just an extension of that. Most people don't consider themselves evil, it's all rationalizations upon rationalizations.