Do you blame the bookstore if someone reads about lockpicking and then gets arrested for breaking and entering? Or maybe if they read mein Kampf and become a neonazi? Think about how ridiculous this argument is for a minute.
Don't try to find logic where there is none. Just because people don't blame libraries for teaching someone how to do bad things it doesn't mean the same people won't blame Youtube for doing the same. Our thought process and morality is relative, inconsistent and illogical. The laws, policies and judicial system are a reflection of that.
Blame attaches to the last thing that changed. (https://www.imperialviolet.org/2016/05/16/agility.html) And to be fair, I don't think that's completely illogical. It's often the case that the last thing that changed is the easiest thing to change back. And the results of recent changes are generally more predictable than the results of changes from a long time ago.
