I don't know. When I leave my bubble of scientists and techies I regularly come across people who will lie without reason, motive or gain, and I think some of them are more emotional than the mean.

It still throws me off, you have to basically vet or ignore any factual statement they make because it might either not have any correlation with reality at all or, if it is a statement about their intentions and feelings, they will not remember what they said in the future anyway and say they always had the new opinion.