They sense that there's a plausible gimmick or dubious scam afoot, by this particular religious publishing house.
I sure wish that my brother in law and sister had sensed something wrong. They were slowly drawn in and when I moved in with them, it took six months of them discussing the religion with me for me to be worn down enough to study. I was extremely vulnerable because my brother died during that six months. There are other reasons I was vulnerable as well. I have found that if you go looking for "the truth", you might as well paint control me on your forehead.