In the most recent case, he could turn BTC into cash at a machine at his local convenience store. Surprisingly convenient, really.

He doesn't have a bank account as he's on the blacklist. Not sure why. But in the United States, if you write too many bad cheques, commit cheque fraud, or just default on your overdraft, basically anything where the bank closes your account with cause, you may find getting a bank account again, from any other bank, very difficult. (They have a reporting service they almost all report to and verify with.)

About 10 million Americans are blacklisted like this, from what I understand. And then you have people who lack ID, or who can't get an account for another reason. The unbanked add up to a fairly significant market - something like 5 - 8% of American adults.