More important than any culture fit is for a business to make a profit. Without that, there's no business to begin with, and while I concede that different traits can make that easier or harder, a good manager can make a team where none would have emerged without them. It's repeated often that employees don't quit bad jobs, they quit bad managers.

A good manager will inspire motivation, bring comfort, foster a nonthreatening environment with an appropriate level of conflict, and shape a competitive force to be reckoned with. This does not mean creating a hug box. Not having a hug box doesn't mean employees have to be unhappy. It's bad managers whose ineffectiveness allows negative traits (which everybody has) to impact other employees.