I'm going to contribute to a friends unhappiness and prevent a potential youtube career
Why are you not trying to support his dreams?
Yes, it's because I hate the guy.
I still do not think that is good reason to basically sabatoge your friend. You should not try to make someone unhappy.
I'm doing it because I hate him and want him to suffer.
I think that maybe it is time to end the friendship then. I think that it is not okay to intentionally make your friend unhappy.