Ignorance is an integral part of the cult. It extends to all areas of science and human behavior.
It is even quite common outside of religious groupthink, it even happens in rationalist groupthink at times.
Read, e.g. Randi's Encyclopedia of Claims, Frauds and Hoaxes of the Occult and Supernatural, especially its article on "auras". Now, if someone talks to a skeptically-minded person and claims to see auras, many skeptics will dismiss such a claim as bollocks or superstition, and possibly stop listening to the claimant or at least make it clear they don't believe the aura-seers claims as concerns the experiences the aura-seer himself has. However, the claim may only partially be bollocks: it is of course unlikely there is any supernatural significance to auras, but we do know of one phenomenon that is somewhat similar - synesthesia makes people "hear" sounds when they see colors, or perceive colours when they hear certain sounds, etc. There is a significant variation in the kind of sensory input that triggers synesthesia, and the kind of perception that gets triggered among those who have it. There is even good research linking the perception of auras with synesthesia, and it is likely that most people who claim to see auras actually do see fields of color the way they claim to. However, of course, there is no supernatural significance to them, they are just products of slightly unusual things going on in the brain.
However, the rationalism group think on this issue does kind of exclude those who perceive such things - we don't tend to listen to their claims regarding their own perceptions but label them liars or delusional, which kind of forces them into the arms of new agers and other people who are willing to take their claims regarding what they see seriously (and invest some kind of supernatural significance into it). Essentially, there's a tendency for us rationalists to drive people with certain conditions away from rationalism.