its either of this three, he does not now bitcoin that's why he is saying this kind of things, or he know bitcoin but he had lose his profit thats why he saying negative things about bitcoin, or this he knows bitcoin and he is causing fear, uncertainty and doubt, usually evoked intentionally in order to put a competitor at a disadvantage (FUD), to buy cheap because he miss to buy recently while the value is on dip, to bad for him , bitcoin will now get back to its current heights.