I've been a hiring manager for remote positions for a long time. If your recruiting channels are good, most of your candidates are going to be honest and good intentioned. But interview enough people, and you'll start encountering people trying to abuse remote work. They're not interested in contributing to your company. They're only interested in collecting paychecks while they do as little work as possible for as l…
Bingo. That was my first thought in this. Especially given how quickly they gave the job up.
They paid someone to interview for them, collected wages for the period they were employed, and then went on to the next opportunity.
Sadly, there is nothing in the story to discourage the person from doing it again. And at most companies, there would be enough egg on HR's face for letting this happen that I'd imagine everyone would quietly sweep it under the rug.