Why not choose a problem more representative of the job and business domain? One that demonstrates their ability to write clean, testable, readable OO code, wi

Why not choose a problem more representative of the job and business domain? One that demonstrates their ability to write clean, testable, readable OO code, with appropriate abstractions, and not overengineered. I find most candidates, struggle to do this, including algo wizards. Most software engineers aren't good at this either.