Most of them love to do a scare to those who are ignorant to the flow of the price of bitcoin...They are the one's who want to accumulate more and more bitcoin at the wrong time so they want to create a panic so they could buy..
Or it could be if there is no more movement that is happening. Just like now. Movement are 10-15 dollars only max per bitcoin. So that panic could be created for a lot of people to sell their coins and the great price back will be an opportunity for whales to buy more making a good rise again.