He is dumb as hell, but 250 thousand dollars is not going to affect the market, it is impossible because not even 1 billion dollars could move the price for more than $10 on the actual price.
But those 250k could move bitcoin cash value, maybe more than $10 or at least $15, it is not much money but everything makes sound if we talk about bitcoin cash.
I dont know what is his real point, maybe he wants to destroy bitcoin, and he is actually doing it , but what the hell, why did he wanted to do this JUST now??