Really? I'd like to know more about this, if true that would be an interesting development.
He probably means blackhats.
More than likely.
Only up to the point where they need to pay rent, buy food, pay taxes, or otherwise live their lives in the real world. When those things happen, those hypothetical developers will go running to a Bitcoin exchange to get their nation's currency (and they'll be pretty unhappy if there is a sudden, unexpected fluctuation in the price of Bitcoin).
This is the first time I hear about this. Could you tell us how many talented developers there are in the "bunch"?
I'm one of them. I don't even accept new clients unless they come via referral. But if you have some juicy bitcoin, it's a different story.
Wha? Who? Super-secretive coders that you can only talk to via the darknets?
Edit: Perhaps a sentient paperclip maximizer with no other way of interacting with the human financial system: