Neuroscience tells us then that the brain closes the shutters and tightens its grip on existing belief if one’s worldview and identity are challenged, so it’s a good heads-up on how we talk to believers.
Yes, that is the important point in this article and explains much about why you will almost never convince a JW that the Watchtower is wrong by pointing out it's flaws. You actions are counter productive because you are threatening the person's sense of self, the battle is lost at the get go.
The few examples of people that got others out of the religion all worked because they didn't ever criticIze the Watchtower. Instead they asked leading questions designed to get the person to think.