It seems like your company leadership missed that part of the lesson.
It's the danger with not updating your behavior when the balance of probabilities shows that the individual/group/organization you're dealing with is acting in bad faith.
Our modern era has so many megaphones blaring into the void that it's become significantly more difficult to determine which ones are overtly lying. Accordingly, it's far more difficult to establish a consensus about who's operating in bad faith.
Again, the failure point isn't with the assumption of good faith. It's with not recognizing bad faith when it's made manifest.
It helps the good people, who do good and influence their society to do the same, and live in a good society. The best societies give the accused the full protection of the law, and give them fair trials. The problematic ones have mob rule.
Much of what you write assumes the OP author and you know what evil is, with certainty. That is the critical and most dangerous flaw.
So it makes sense to be cautious when I find myself feeling like one, or being pulled along by the emotions of another who does.