One thing to bear in mind are the target readers of this piece. In other words, is this intended for the rank-and-file to read and consider or is it pabulum for the masses? It seems to me that the public edition of The Watchtower is mainly for the general public and the articles it contains are written with them in mind. There have been exceptions, like the two-part series on Jerusalem’s destruction last year. Those clearly were for veteran Witnesses and their purpose was to shore up support for the WTS interpretation of Daniel 2 and wipe out any doubts about the 607 BC date.
I think this particular article is aimed at the general public. Witnesses are already convinced they have “the truth”, so they would feel no need to examine their religion critically. Doubters in other religions, however, are considered fair game by the WTS, so articles like this are to be used as a way of enticing the reader to accept the offer of the free home Bible study when it is made. Once the study has been initiated, the student can be convinced to surrender his free will and “power of reason” to the WTS leadership.
Quendi