"Most Middle Eastern people resemble each other much more than, for example, they do Europeans. I defy you to tell an Iranian Jew apart from a Syrian Jew or from an Egyptian Jew or from a Bukharan Jew."

I am not sure you are right, but if you were so what. Most of these Jews resemble the non Jews in the surrounding communities more than do the Jews of say Russia or even Italy.

"We are a small people who have always been distinguished by our outsized contribution in every area of  Science, Business, the Arts and Learning. That is due to our shared DNA which is common to Jews from every corner of the world."

Most of the contributions have been made by Ashkenazi and not by Mizrachi Jews, anonymous "Maven." Even so DNA has nothing to do with it. Cultural habits do.