Fact checkers weren't deleting posts and didn't even have the right to do so. They are separate journalistic orgs tagging posts. Deleting is done by Meta moderators, which is something else entirely.

I think you also just proved my point that if HN users can't even get basic facts about an event right, how do you expect the average FB user to do so? Goes to show that even on HN "community noting" would be a disaster.