Millions of people just don't understand what others are able to understand - as their inner nature doesn't allow it. Their belief-system just holds a different pattern than that which would be necessary to feel comfortable with what they learn. So they keep on digging old pits even deeper until they can't get out of them any more without help. The great religions have a strict dogmatic network, but the modern spiritual trends don't, and all depends on the master. If unhappy spiritual pupils would think once of the fact, that their master for sure doesn't understand everything that is of value in their view of the world, they might feel much better.
Beliefs are highly individual stuff, no matter which source they come from.
No two people in this world have the same view of Christianity or Islam or Buddhism or anything else. Because not two people in this world have lived the same life and have thought the same thoughts that led to them what they are now, trying to obey religious rules. Many conflicts result between the spiritual rules created by spiritual masters which the pupils are not able to consider being right and sensible and the pupil's wish to obey to them. Many spiritual misunderstandings are due to the fact that masters and students don't talk the same language. It may be nice to dwell in foreign spirituality, but it makes no sense if you don't know anything of the underyling culture.