Bradley, I agree in some ways with the brainwashing thing. However, I was raised to think, act, and believe a certain way that is contrary to reality. I had no choice in the matter. I was brain-trained.
Those who choose to go deeper into a cult, be it religious or social, you're right, they are usually people who have victim tendencies, or those with tendencies to addictive compulsive disorders. Or young seeking to understand and belong. In high control groups and cults, mind control is essential. Thinking for yourself is dangerous. Old behaviours and beliefs are replaced. Hence "brainwashing". It may not be the science fiction version with old memories wiped out and replaced with new memories and behaviours, but brainwashing does exist once a person allows themselves to be subject.
However, for a person to understand that they have been manipulated and controled, requires that they begin to understand that they were a victim, that they were victimized, AND, painfully so, especially for those who were adults and became involved, allowed it.
My quip to CodeBlue was just that, a quip.
Hugs
Bren