It's one thing to say "I don't want to interact with you." People have the right to curate their interpersonal interactions. That's fine. What's bullshit is when a person says, "If you won't interact with me, I disallow you from interacting with anyone." Deplatorming is something that's appropriate for Nazis and shit like that, but if you do it to a person just because you don't like them, that's asinine.