The American tech industry is run by (straight) white men, we're doing most of the speaking, highly disproportionate to our representation globally (where the impact of our decision are felt).
I obviously think it's a good thing (but only to the above extent.) But it is bad to tell people that they're crazy, because it makes them upset when they know they're not.
And when it comes to technical conversations (the topic of this post), literally none of this is true at all. White men are absolutely and completely free to say literally any work-related thing they want, there is no chilling effect present there.
Usually talking anything disagreeable will get you anywhere from passed over for promotion, shitcanned, fired for any imaginary reason of applicable. It affects women more than men, and interacts with racism too as judgements are harsher, so the threshold of what is "unacceptable" is tighter.
Microsoft, Google, Adobe, IBM, ....