> I don't understand why doesn't Facebook just: -Allow all posts [...] To me effectively everyone wins.
"Everyone", including racists, terrorists, drug cartels, human smugglers, child pornographers, scammers, phishers, hackers, gun nuts, anarchists...
I know you say you'd be fine with all that stuff, but if I write long enough I'll find something you're not OK with. And everyone else has a different something. Finding common ground on which we can all agree isn't a mistaken goal or an unnatural side effect of having a public forum. It is the purpose of having a public forum.
This is just another variant of the "forums should be unmoderated" argument. No one wants that. And the proof? You're making the point on a heavily moderated forum.