I agree with the first part of what you're saying. The purpose of concepts like "culture fit" is to encode the idea that human interaction can't be easily reduced to numbers and checkboxes, so people can be a bad fit for a team even if there's no specific job requirement they don't fulfil. You can go too far and end up with an exclusionary team only accepting carbon-copies of each other, certainly, but the idea that the entire concept of fitting in is fake seems too far in the opposite direction.