This trait of deceit is such a strange thing to find amongst 'the most honest people' in the world....
I do think there is a critical honesty regarding things like stolen goods, finding money etc, being given too much change! most JWs I know would be very honest over these things, avoiding being caught up with anything that smacked of taking something etc.
But when it comes to communication, it's like the JW culture overall fails to act in a truly generous nature of respect where other human beings are deserving of respectful treatment....if that makes sense...in that there are smoke screens, things held back....
And then you see this permeating into the JW population. It's really noticeable.
But then, individuals and groups behave like this everywhere......its just particularly weird amongst people who spend hours studying words and scriptures on being truthful!