Should we follow the sects established by Nichinyo and Ikeda or the sect rstablished by the Buddha?

"The various other sects were founded by bodhisattvas or teachers in the period after the Buddha entered Nirvana. Should we turn our backs on the Buddha's decree and follow the sects established by the bodhisattvas and teachers? Or should we ignore the words of the bodhisattvas and teachers and follow the sect established by the Buddha?''