> Assuming bad faith immediately kills all productivity, so there's no point in finishing reading this.

First, the author is not assuming bad faith. They are saying that judging people is common pitfall. And the "hating or dismissing people for misunderstanding the thing you documented badly" is something I have seen done so many times, that yep, it exists.

But second unrelated thing is, sometimes there is a bad faith. Refusing to accept that bad faith situation can happen just makes it massively harder to solve the issue. It empowers the person acting in bad faith.