This makes no sense. If you tell people you are going to buy before you buy and they listen to you, you pay more. The only logical reason to tell people you are going to buy is if you are going to sell, so that you can sell at a higher price.
So in fact there would be a big dump instead of pump. Or maybe not, because the poster want us to really pump, so he tells thi and we'll think it is not a pump, but a disguised dump ....
Could be that the original poster does not really care what the effect would be - if this "panic message" causes people to buy like crazy, he'll sell some EAC and later re-buys them with profit. If the price drops because of people quickly dumping, he'll buy at discount and sell later once the price goes back.
And I see EAC at 120 satoshis ... should have sold ALL of it, while it had at least some value ...