Krsna. Where is the question of eternal bliss when the eternal aspect of bhakti and prema is doubted?

Chaya-namabhasa can lead to suddhanama

"If the chaya-namabhasa chanter is not contaminated by atheistic concepts, then he has a good chance. His position is that he is ignorant about the potency of the holy name, but it is the inherent nature of the holy name to impregnate that knowledge into the chanter's heart. For example, the sun may not be visible when the sky is cloudy, but once the clouds are dispersed, the sun shines through in full glory. The chanter gains great benefit from taking shelter of a bona fide spiritual master, and in a short time is able to attain the pure name and krsna-prema.

The false identification of the body as the self leads to more than just racial conflicts. International conflicts, religious conflicts, sexual conflicts, and many other conflicts are rooted in this false identification.
Chris Butler Speaks

Devotees must not associate with mayavadis

"Diligently avoid association of mayavadis! Please serve those who are attached to chanting purely! O Lord Caitanya, this is Your injunction and whoever follows it is very fortunate. Those who disregard and disobey this instruction are wretches who will suffer eternally. O, my Lordl please bless me so I can reject bad association and take shelter at Your lotus feet! There is no other way."

One who is blessed with love and devotion and takes pleasure in serving Srila Haridasa Thakura's lotus feet will find this book Harinama Cintamani as valuable as life itself.