In my experience, evasiveness and “baffling” behavior of this kind can indicate a deeply rooted in personality trait.

Personalities like this exist across the social stratum. They are something to take careful note of as quickly as possible and avoid.

I agree with you - humans have thousands of years of experience figuring out who and what to trust. It’s kind of amazing how easy it is to destroy a reputation, especially when you consider how hard it is to build one.