The statement was
"Warren Buffet can't crash the value of a USD in an instant either! "
Neither can large Bitcoin holders, not without destroying their own wealth. Even if Warren Buffet wanted to crash the dollar he wouldn't if most of his wealth was illiquid and tied up in dollars.
Ahhh - sorry, misunderstood you. Thought you ment there was some kind of protection.
Their interest is not to crash anything. They just want to trade up the value and then sell everything. After that BTC will fall to the natural value it should have been traded to all the time and all the foolish people who thought it was a fair game can lick their wounds