You answered your own question. If they don't meet any of the criteria that some psychologists use to diagnose a personality disorder then they don't have a personality disorder. If they don't have a personality disorder then they are just human. Then again, people with "so called" personality disorders are just human too.
And that is the answer to your hypothetical. People are just people, with and without consciences. What psychologists say or don't say is ultimately irrelevant until you decide to make it so by believing their words are gospel. Normal isn't a real state of being. It's in the eye of the beholder.