no one is going to crack the passphrase for the one or the private key for the other - unless one of the workers has access but per Bobby all that data is deleted so that means no one is gonna get it.
But how do we know that one of the workers doesn't have it? Just because they didn't hack it today or tomorrow.... It just means that they haven't gone rogue yet (or maybe not).
Nobody really knows. So far so good and let's hope it stays that way. But let's not put too much stock in these marketing gimmicks.
And 2BTC? Seriously? A reward for ants?