The article makes it clear that the YC interview selection process is deeply flawed. Leaving out the idea that they were selected because they told a story about the sound of biting a bottle, surely at the interview stage, if the entrepreneurs do not know what the company is making, or the business looks weak the interviewer should just say no. It's not enough to say "here are two bright people that can pivot". Brigh…
Some such businesses may work, like job recruitment, but I think it's mostly because the weaker side (the unemployed) doesn't have much to lose.