Freddy was indeed the oracle from the 40's to the 70's; his stock waned and the power of the GB waxed when the end did not come.
But why do we think he was so good? Because he was less crazy than Rutherford, and could turn large piles of dung into birghtly polished turds, like the blood policy, disfellowshipping for smoking, the certainty of 1975, on and on.
His words had the power they did because the fellowship is just not well educated or trained to think critically. As an example, we listened with rapt attention to the factors behind the dating for 1975, but when Time interviewed him in 1976 his answer to their pointed question about why the end has not come? "We just don't know how long it took for Adam to name all the animals." I was embarrassed then, even more now, by that stupid answer.
Still, he seemed smarter than we were, and so his ideas held sway for may years. We never questioned that he was a Rhodes scholar; we trusted that he knew Greek. He was the equivalent of the smartest guy in the room, we believed him.
Today is very different; no oracle today has it as easy as Franz did.
We are in the age of instant access to deep background info about all religions; we can find out in 5 minutes that Franz never was a Rhodes scholar, and never took more than a short survey course in Greek, not even relevant Greek.
Even those who don't want to research into the origins of the WT or the Bible for that matter will sooner or later be exposed to it.
You can easily find very good information about the historical Jesus and that he was just not our Jesus.
Religions, especially the witnesses and other mind control pseudo cults, must change their approach to be relevant. The Abrahamic faiths must abandon their insistence that their history is literally true; it is just too easy to prove that it is not.