In Desteni, 'self-purification' and 'self-realization' are described in terms of destruction of the personality, the mind, consciousness, thoughts, feelings and emotions, and the destruction of beliefs and opinions. All of it is to 'realize self as the physical', whatever that means.
Other people in disagreement with these notions are variously described by Bernar
Forum:
"Cults," Sects, and "New Religious Movements"