If you think supporting free speech is a moral imperative even for private companies, why do keep posting on a heavily moderated forum like HN that regularly ba

If you think supporting free speech is a moral imperative even for private companies, why do keep posting on a heavily moderated forum like HN that regularly bans people for trolling and being rude? Is that a tacit admission that censorship is sometimes desirable? If you were consistent about applying your principles you would boycott HN too.