Yes, I've seen this for myself on here and also on a Creationist site I used to visit. The more you argue with them, the more logic and rationale you present, the more irrefutable evidence you link to, the more entrenched in their views they become. Bizarre!
There is an excellent book written by a psychologist who joined a millennial cult in order to do participant observation. The main point of interest was that despite repeated dates identified by the cult leader for the rapture, and such dates being regularly disappointing, the more this happened, the stronger the belief became because they had too much ego identity invested in the belief system and the cost of changing ones mind was almost equivalent to loss of life. So they kept believing beyond rationality.
This case has never had enough evidence to plump for any explanation. Amaral was wrong and the AG was right.
All we are left with is true believers with too much to lose if hey admit their error. The brightest and most moral of the McCann [ censored word ]s have quietly slipped away and regained their lives while the true fanatics have gone to twitter.
Fascinating.