So, we can see when others are being dishonest or insincere.
There is at least one difference to when others are incongruent and when we appear to be.
When we do x, we know what our intention was and so we can "pardon/explain" ourselves. When others do x, we can't read their minds, so we become the judge and jury.
Have you thought about this? Do you see it this way or another way?