What one fails to comprehend is how the leaders of these cults, who have never accept discipleship and tutelage from any bona fide spiritual master, can suddenly rise to the position of spiritual master themselves. The subject matter that needs to be promulgated among the people is not some cheap, sentimental concoction meant to deceive them; it is in fact a deeply profound and esoteric theology. The words of Lord Caitanya can never be disseminated by unscrupulous self-styled "gurus" who fake spiritual sentiments to impress the ignorant mass of people. All saintly persons beware!
Our general experience is that impersonalists, given as they are to speculation and sophistry, hesitate to accept Lord Kṛṣṇa as the Supreme Godhead. Thus they will always be frustrated in their endeavors to know the Supreme Absolute Truth by dint of their own intelligence.