Then the person asks why we think it's bad, and our unconscious supplies whatever rationale it thinks is most plausible and feeds it to us.

Don't blame the unconscious. It only makes up explanations when you ask for them.

My first lesson in this was when I was 17 years old, at my first programming job in the USA. I hadn't been working there very long, maybe only a week or two, and I said something or other that I hadn't thought through -- essentially making up an explanation.

The boss reprimanded me, and told me of something he called "Counter man syndrome", wherein a person behind a counter comes to believe that they know things they don't know, because, after all, they're the person behind the counter. So they can't just answer a question with "I don't know"... and thus they make something up, without really paying attention to the fact that they're making it up. Pretty soon, they don't know the difference between the facts and their own bullshit.

From then on, I never believed my own made-up explanations... at least not in the field of computers. Instead, I considered them as hypotheses.

So, it's not only a learnable skill, it can be learned quickly, at least by 17 year-old. ;-)