Edit: except the parts about SF, obviously. San Francisco is clearly not the interesting eclectic city the author describes. More and more of the office park culture of SJ & The Valley has crept into San Francisco, and this influx of white and Asian males who work in tech has made San Francisco many steps closer to a large office park "city".
Substitute "white and Asian" with "black and Puerto Rican" and "office park" with "barrio" and you have the same sentiment.
If startup employees as a set were more racially/ethnically diverse it might defy that stereotype of uninteresting personalities. Or that might just decouple it from the racial predictability. Eg, in NYC I-Banking is a bit more diverse but still induces that same yawn -- in some people -- when you hear someone say that's the field they work in.
PS, I upvoted you bc I believe you're asking the question honestly and not in a trolling way. Your comment was grey when I came to it.
Would you blame the financial meltdown of 2009 on those "greedy Jew bankers", based on the perception that Jews are over-represented in the top echelons of the financial industry?
Would you call gun homicide a "black problem" in the U.S. today, based on the fact that many gun homicides are committed by blacks?
Ethnic generalizations are rarely justifiable except arguably in airport security profiling where lives might be at stake, and even then a lot of innocent people get unfairly caught up in the dragnet.
Consider also the following thought experiment: you develop a brain condition that requires immediate surgery. You are assigned a surgeon who is world famous for treating your condition but you are unconscious. Later, after a successful operation, you discover the surgeon was a black woman. Do you then say, "Wow, what a strange thing that is!" or do you say, "I'm alive! Thank you for your help!"
In the end, it comes down to person-to-person interactions. Each of us is different, each of us unique, and ethnicity, nationality, age, and gender are textures that flavor our lives but don't in the end define us. Just my 2 cents!
He's not implying a necessary correlation but reporting an observation. I may be overly generous in reading his comment but I don't think so.