[MarcusVorenus]

Cultural fit can definitely impact performance. Imagine a luddite working for a biotechnology company, or an anarchist working for the government, or a muslim working for an atheist non-profit. These people would never find the motivation to perform better than the absolute minimum required to keep their jobs because their goals and the goals of the organization are complete opposites. They could even go as far as sabotaging the performance of others by creating a toxic work environment.

[joesmo]

Not necessarily. There are plenty of Muslims who could help an atheist non profit by maintaining their professionalism. Likewise for your other examples. By assuming that they will let their beliefs sabotage their work, you're judging a whole group by the potential actions of zero or more people. That's just discrimination against people with these various beliefs without proof. By this line of reasoning you could say that Catholics should never be hired at planned parenthood because they will sabotage it. Total load of bull shit and exactly the reason "cultural fit" should be illegal. It's just plain discrimination.

[MarcusVorenus]

They can be professional all they like but if they only have money as a motivator to work at a place they hate then they'll just be poor performers. They won't have the energy to do more than the bare minimum. Motivation is just not something that you can command at will.