It is thanks to our seeds of auspicious causation, not to SGI

"The Great Teacher Miao-lo says in his commentary (Hokke Mongu Ki, seven): Therefore we know that if, in the latter age, one is able to hear the Law even briefly, and if having heard it, one then arouses faith in it, this comes about because of the seeds planted in a previous existence.' And he also says (Maka Shikan Bugyoden Guketsu): "Being born at the end of the Middle Day of the Law, I have been able to behold these true words of the sutra. Unless in a previous existence one has planted the seeds of auspicious causation, then it is truly difficult to encounter such an opportunity."(Rebuking Slander of the Law, MW vol. 6)

It is thanks to the good causes that we made in previous existences that we have encountered Namu Myoho renge kyo. It is not thanks to the Soka Gakkai as they would have us believe. It is also thanks to the good causes that we made that we have strong faith in the Gohonzon, the Lotus Sutra, Shakyamuni Buddha and Nichiren Daishonin. Finally, it is thanks to these good causes that we now practice the Mystic Law correctly. What terrible causes have they made, the believers in Islam, Christianity, and especially the members of the Soka Gakkai and the Nichiren Shoshu? Truly, it can not be imagined.