It's still not 100% clear it was a hoax. There are two possibilities:
It's possible that the couple in question 'shopped both the receipt and the credit card statement (the reporter didn't look at the statement online). Occam's Razor says this is unlikely. If it is the case I imagine the restaurant will find the original charge that was run.
OR
The waitress got pissed they called her "Dan", perceived it to be a putdown instead of an honest mistake (maybe it was, who knows, doesn't really matter for this argument), ran the receipt, tossed it, and then printed a duplicate receipt she wrote out herself and basked in outrage. She done goofed with running it for the full amount, if this was the case.
I'm leaning towards the latter because it's a lot simpler of an explanation, and because when the reporter followed up with her, her posture, tone, and face felt very similar to when I would catch my nephew in a super obvious lie when I used to babysit them. "Who broke this window"? "I.... don't know. That sucks. Wasn't me."
But technically either scenario is still possible.