I hear ya' - but we also need to have discernment, and to call a lie and lie, even if it hurts someone's feelings.
To do anything less could be enabling bad behavior.
But “You’ve believed a lie” doesn’t mean “Your destiny is only hell.”
Many churches see more through theory than they do through Christ, which latter can be a humbling (and irritating, since mortal thought is so contrary to it) experience.
And to believe a lie is not to lie. Lies presuppose understanding the truth and are a higher level of wrong.