Seeking commonalities is something different.

Every transaction is a point in time where two or more minds come together around a common purpose. That can range from simple sharing of an idea, drinking and eating together, a party, etc.

Insisting on diversity, is insisting to elevate differences first while at the same time denying certain parties their own.

The white man is diverse in looks culture, religion and language, though it also shares many commonalities within this section.

So, there is really no need to "enrich" localities and make them all equal to the lowest common denominator by force! oikophobia is a result of deep cult programming.