I never experienced either, I tend to like a channel or dislike them. I don't care enough to hate some random person for making videos I don't like, I am mature enough to just not watch them, since they effect me in no way at all. As for the opposite, if a channel starts uploading videos I don't enjoy as much as their previous work, I simply unsubscribe without caring, and if the channel owner gets into trouble due to allegations or whatever, I generally don't pay enough attention to care anyway.