No, he paid in USD, just like everyone else. Nice try, though.
Meanwhile, if he bought BTC, he would have 23 BTC, right now. Nice try at post rationalizing though.
Hindsight my friend. BTC could have went to zero too. this is a weak argument.
The value and income of bitcoin mining devices is tied to the value of bitcoin. Unlike gpus, ASIC can't be resold for other purposes. Therefore, by buying a BFL ASIC, he was still at the whim of BTC prices.