I've helped to convince many people to leave the SGI. I spoke to one person for 5 years until he eventually left the SGI but I don't know how much I actually contributed to his decision or if it was solely due to his own awakening. Other people have thanked me for helping to open their eyes to the true nature of SGI. I've been doing this for so long and I have been read by thousands of people, so I may never know to whom I have made an impact. Its like two ships passing in the night or a distant lighthouse warning of the shoals ahead and sometimes, it's just planting a single seed of doubt.
Simultaneously, I recommend to a new convert from the Soka Gakkai to begin chanting the seven character Daimoku, Namu Myoho renge kyo and to read various translations of the Lotus Sutra Gosho from many sources and without the SGI footnotes. More often than not, they continue their practice as an Independent and seek out a copy of a Ni8chiren inscribed Gohonzon.