It helps focus the culture on the business over other social queues and aspects, it removes the anxiety that different social groups will have with that workplace.
https://hackernoon.com/for-inclusive-culture-maybe-less-is-m...
https://hackernoon.com/for-inclusive-culture-maybe-less-is-m...
I disagree entirely that we can't be social with people different as us. I also disagree that business shouldn't be social, but that's mostly an opinion.
FYI, the word you're thinking of is "cue", not "queue".