This type of "because I told you so" style only works as a show of power, otherwise people would just continue do it somewhere else. I get the feeling this author spends more time talking down to people than up to them.
It's like if a cop tells you to stop doing something at a traffic stop, because she tells you so. It's not that you think they're going to shoot you if you keep it up. But it's authority on the level of, I could make your immediate future very unpleasant if you don't do what I say.
If you choose to question the statement, you could cynically assume that the other person is going to use anything you say as evidence that you're not professional/are harassing them/make them feel uncomfortable against you. Better to just shut up rather than say something damming.
I've been in a situation like this, and being on the receiving end of the "we don't do that here" is received as "shut up, do what I say, and don't question me".
Regardless, my point is in an average job there's a lot of people that don't have direct authority over you but have the power to make your life really unpleasant. A more senior coworker probably can't get you fired, but they may well be involved in important decisions around you.
If I were told "We don't do that here" at a new job, I would learn that I stepped across a line and likely a generally agreed-upon line, and that if I continue to do so, I will be causing problems for myself. And I mean "causing problems for myself" in the same way that any other behavioral quirk causes problems, from chewing with your mouth open to yelling at someone for not putting paper in the printer.
But then, I'm also not someone who feels the urge to debate what line was crossed, whether or not my intentions mattered when I crossed the line, the precise location of the line and any others that I might cross in the future, or whatever it is that them as cause this particular issue want out of the conversation.
This (and a lot of other related arguments in this thread) would probably be a lot clearer with less contentious examples, like "don't push a deploy after 4pm," than with hot-button political topics. If you go to push a deploy at quitting time and someone says "We don't do that here", you wouldn't think they're on a power trip, you'd think they don't fully trust their automation tests.
A show of power expressed through "low", indirect language. Might not be sending the intended message. "That doesn't work for me", in particular, reads as "parochial middle manager" to me.