Simply because Jw`s re-interpret / revise their early history ,leave out the embarrassing / incriminating stuff the majority of JW`s nowadays have no Idea about the absurd teachings that were accepted as Divine truth in Russell``s and Rutherford`s days.
How many JW`s today know that the organization believed and taught in their publications that 6000 years of human history ended in the late 1800`s and that the 7th day began back then before 1914 .?
How many know about their belief in Pyramidology and their connecting it to Bible scriptures and prophecy and taught it as "Truth"
How gullible people are who believe in " past truths" .."present truths" and ..."future truths" when the nu-lite is revealed rationalising how past "truths" failed to come true or materialise .