Here's a probably-apocryphal story about San Francisco. The cultural tolerance and open-mindedness the city was know for happened because at some point in history the need for dockworkers was way, way stronger than any superficial differences that employers might otherwise discriminate over if the labor pool was larger. At a time when discrimination was the open and explicit norm, that lack of exclusion grew out into the societal attitudes across the city.

Tech was once a place where we lived with weirdos ranging from unconventional appearance all the way to downright unpleasant to work with. There was a lot of work to get done, and goddamn we were going to figure out how to get it done with the people we had.

Fast forward to the 2010's. We hire for conformity across the board, some places even acknowledge the strictness of that part of their selection criteria and call it "culture fit." It's a very dictionary-definition-but-not-political-alignment conservative time. The outliers have all gotta go.