I would agree with those who mentioned the GB making themselves the FDS. I knew about 607 and 1914 for a long time, but it didn't bother me enough to dig deeper.
For some reason, the "new light" about the FDS really made me uncomfortable and agitated. It sent me into a research frenzy. I read the gospels, doing my best to remove "WT glasses" (hard for a born-in JW), and I came to the conclusion that it was only a parable, not prophecy. After that, the whole WT framework just tumbled for me. I no longer saw the GB as sincere bible students.
Another big thing was the Revised NWT release. I was already distrustful of the GB at that point. So I began comparing a number of translations, and once again saw manipulation and dishonesty.
My trust in the org was shattered and I doubt there would be much to restore it for me.
And seeing Lett and Morris in action has also been enlightening 🙄