I am a follower on his Twitter so I would know if he is the cause of this FUD and I think that a lot of users here will pick it up when it happens. I have read some that it's China that's causing the FUD but I don't exactly know what China did though.
The deputy governor of the People's Bank of China emphasized the need to crack down on virtual currencies and take some measures, mainly referring to Bitcoin. It is also emphasized that these currencies themselves have become a speculative tool. When this happens in the market, there are also potential risks that threaten financial security and social stability.