It's a neat idea for the interview, but it could have caused problems, at least in the U.S., regarding labor law:
Suppose the interviewee had answered, "I would work towards a proper implementation of Sharia law." or "I would start by building Christian churches and state-sponsored public preaching." or "I would start by replacing all mosques with science-and-technology museums."
At that point any candidate who wasn't hired could have a good starting point for a lawsuit based on hiring discrimination by protected class.
Ehh, only if there was a demonstrable pattern. You can't just sue an employer for not getting a job because you mentioned your religion as the basis for something.
I mean in the US you can sue for whatever you want, but the likelihood of it happening or being an issue is quite small in this scenario.
This is true. But in this specific case, it is unlikely a single person, especially one in the position of interviewing for a lower level job, would have enough money to rival the company in a lawsuit or cause them severe financial pain. Usually it's the opposite situation that is financially ruinous.
The point isn't that the lawsuit is going to ruin the company. It's that the lawsuit is going to cost the company money in almost every case where it happens, no matter how frivolous the lawsuit. The smart choice for the company is to limit risk factors for having to face a lawsuit.
Suppose the interviewee had answered, "I would work towards a proper implementation of Sharia law." or "I would start by building Christian churches and state-sponsored public preaching." or "I would start by replacing all mosques with science-and-technology museums."
At that point any candidate who wasn't hired could have a good starting point for a lawsuit based on hiring discrimination by protected class.