I'm pretty sure it's because a mod came in here and essentially threatened anyone who claim it's a hoax will be banned. Not sure if the news now changes that but I doubt it will.
I'm going to be clear (because I'm the mod in question).
There was no reason to disbelieve Jussie's account of what happened when this story initially broke outside of conjecture and conspiracy theorizing. That sort of thing is generally frowned upon here, especially in circumstances involving victims of assault, which as of today is still Jussie Smollett.
There was no threat. It was a restatement of policy on this board
As new facts become known, feel free to discuss them.