Why Myoho renge kyo remains precious despite Soka Gakkai and the other misguided sects

"The fact that the power of the precepts is not lost may be compared to a situation in which one uses gold and silver to fashion a vessel. As long as one can use it, it is of great value; but even if the vessel is broken and becomes useless, the materials it is made of do not cease to be precious.” -- Nichiren