I'm not sure, but in such a market condition, who else does agree that the government used a hidden identity and joined the crypto market to accumulate a large number of bitcoins, then sold it to affect its price? Or can the gov hires a couple well known personality to rule the every day news and kill it slowly?
The government can do a lot. Perhaps the big cryptocurrency capital belongs to different countries. We will not know. And the information war is always seen. Even developers see the information war to get more investment in their project.