The men were dressed casually, in jeans and t-shirts, but seeing her able to feel comfortable as herself made me excited to join. This was at a time that Starbucks made baristas cover up visible tattoos, and many professional tech roles at large companies still required "business casual" of khakis & polos.
Around 2000 or so GS relaxed the dress code, and, to compete better with tech in hiring, even put a foosball table somewhere in their NY headquarters on 85 Broad Street. Then the dot com bubble burst, and the foosball table was gone rather quickly.
In any case, these seem like two unrelated changes (West Coast culture of looks-acceptance coinciding with a global telecommunications and searchable data storage networkb that feed existing culture of lack of words / deeds acceptance).
But the consequent public shunning is an existing practice grown to the scale of the public being global facilitated by the global telecommunications infrastructure; it's not new and it doesn't stem culturally solely from the people who built the system. It would have been too expensive in the past to know what racist thing somebody said in confidence to a friend before boarding a plane... Now, they can broadcast it worldwide and people globally will have done extended commentary on it amongst each other by the time the plane lands.
But it's not the West Coast folks managing the commentary... They have handed a tool to the world, and this is how the world chooses to use it.