When a person hits that subscribe button they are saying, I want this person's content... not I want you @Youtube to decide what portion of content I get.... C'mon guys, to subscribe is an action, which means that sub is saying, give me this content
pic.twitter.com/ie8N97VQzF
So leave it to the user on what they want to see via the sub button? Why are you, the corporation, determining what people see and don't see? That's not choice.