Generalizations are rarely correct.
Stereotypes are always incorrect when applied generally, like this person was. However, stereotyping is a natural social phenomenon because the human brain works by association. The existence of this particular stereotype is evidence of a strong atheist population within the EXJW ranks.
When I really think about it there is very little difference between the ideology of Jehovah's Witnesses and atheism. Both are based on ideas that have been worked out with a rational methodology. The Jehovah's Witnesses follow the rational of the Governing Body, atheists follow the rational of the Scientific Community. The results obtained from the perspective sources widely differ which is why you see them in a battle to the bitter end against each other. However both ideals are still to be considered forms of rationalism. The Witnesses base their beliefs largely off of the Old Testament and the ancient Jews were a very rational people. Yet, they were divided in that some wanted to take a more spiritualistic approach and others a rationalistic. It's obvious that the Jehovah's Witnesses see themselves as more like scholars than spiritual interpreters. Which is why you see public Watchtowers that condemn the occult. They don't want to be looked at as spiritualists, they want to be looked at as scholars.
Witnesses don't believe the Book of Enoch to be valid Scripture because of it's "fanciful tales", yet they will take a story like that of the teleporting philip in Acts at face value. This belief hinges from a rational argument of the Bible's inerrancy. Which is why you constantly see Watchtowers that are about "God's Word the Bible" and how "amazing" it is.
The Witnesses seem to pride themselves on not being as faith based as the next religion. They claim to take a balanced and rational approach to the Bible and have simply discovered it to be the inerrant word of God. This makes them a scripture-based Christian sect which is why they are seen to be busy bodies, their noses constantly in the Bible.
It's easy to make the switch to atheism from the JW's because Science is also very busy. You are constantly taking into consideration as many factors as you can while using a simple methology to parse through it. It can be a painstaking process which the human mind loves when attached to an end goal, it fills them with a sense of accomplishment. Science is fun, the Watchtower is supposed to be "Bible science." Yet, that is just how it appears. Really, it's all smoke and mirrors and a means to make record profits for some souless corporate structure. The Watchtower would make a good video game, not an actual lifestyle.
-Sab