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??
The amount of bitcoins he plans to sell actually amounts to almost 150 Million USD. I'm pretty sure that if he sells all the coins, bitcoin prices will crash and bitcoin cash prices will rise.
To me, this is an elaborate pump and dump, hype that he will generate by buying that amount of bitcoin cash will skyrocket the price of the currency, he will then sell it at a profit for much more bitcoin than he bought it for in the first place.
I'm really interested in seeing if one person can dictate the price of bitcoin.