Even if they are those assholes you have to be a real asshole to overpay fees like that, although I guess they think they are going to become millionaires and they don't care, but even if they believe that, why such a hurry to have their transaction confirmed and pay so much?
"Asshole"? It's simply human nature ser, and the irrationality that will comes with it when someone is in the manner in which he believes that he will gain and profit from something. BUT the Bitcoin network happens to have a spam-protection mechanism through regulation of the block size + the fee market. That's the design, and therefore the "assholes" are required to pay higher fees if they want their transactions to be included in the next block.