Who says they can't do the job? It would be easy for a tech-knowledgeable scammer to interview at 100 companies, collect 100 pay-cheques and then dissapear.
I think that's a more realistic possibility. That you have an actual software engineer with tech knowledge doing old fashioned social engineering and doesn't care how many times they get fired. But the AI in this case is just providing a fake profile pic. It's not that deep, as the commenters in this thread are suggesting.
