Most of these people are affected and carried away by the false news coming from the governments.
You can't say if that false news from the governments, because if the governments not believe with Bitcoin they will banned it with the reasonable reason, that like banned Bitcoin because that can use for the illegal activity, scamming and etc. And I think that is not the bad news, the governments take a right action because I think they can't manage the developing of Bitcoin, they don't wanna because Bitcoin the illegal activity will be more. And Smart peoples know about this news.
And about the false news like "Bitcoin will be fall in December 2019" I believe it that is not from the governments, but from the some peoples which wajt to make the Bitcoin price fall and they will buy Bitcoin in cheap price.