Regardless, your clever analogy doesn't apply. Companies are welcome to be political in their own environment. They own it. Employees are not. They're employed at-will.
Anyway, the financial benefits of diversity are almost certainly overstated. I don't know why we can't just say, "we're hiring diverse people because we think it's the right thing to do".
As a society we've been trained or perhaps tricked to suppress our sense of justice and fairness In Gabor of money.
Hence the studies promoting the idea that diverse companies are more profitable, as if that should make any difference. It's a sick obsession with viewing just about everything through a financial lens even when money shouldn't come into it.
However, I sympathize with younger people because it's a double-edged sword at places like Google, where your work and your life are very intentionally blurred. You eat breakfast, lunch and dinner at work. You go out and socialize with your friends from work. You do laundry at work (I'm not sure if Google still does this or not). It's not like the 1980s where people check in at 9am and leave at 5pm.
Then why are you assuming you know what it said?
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I did skim it and it seemed like the pseudo intellectual mumbo jumbo people who think they are being really smart but really are just being obnoxious write; since I read way to much of that sort of thing already I didn't care to read further.
This is the kind of behavior that woke me up (in my early teens) to the dangers of adopting my values from my religious background/peers. I never thought I'd have to deal with witch hunts for wrongthink in tech.
I also sometimes think about topics that would be inappropriate in an office environment (such as sex) and I censor myself by not saying what I am thinking. We even have an Internetism for that concept - NSFW.
None of this is new - we are expected to conduct ourselves appropriately for the current situation. It's just how society works.
I didn't even read the document in question, I just have a very hard time with people getting riled up about being "censored" at work. It's work, what exactly do you expect?