I'm going to expose my buddies reddit account to our other buddies.
Is there something about your buddy's posts that makes you want to expose it?
I just think they are false, and I think breaking the buddy code is justified in this case.
Okay, so you think his posts are not suitable. But he's your friend and you should talk to him about it instead of publicly shaming him.
I can't, he won't listen to me.
It might be better to call out the information itself if it's false. Warn others that the information is false without revealing who owns the account.