To clarify to anyone watching this - Huobi have now clarified that there was no actual threat of violence. It seems they were referring to Justin saying that if the exchange didn't run his code then the exchange would be at risk of being attacked by the evil 'hacker' community witnesses.
Watching what? All that's here for me is a gif.
3speak.online fyi
It was a video describing a conversation with someone at Huobi, but her message was misinterpreted, so it has been deleted to avoid confusion.
Well, thanks for the explanation.