Nice attempt at oversimplification, but you'll need to try harder.
Jokes on you, I got to a private, LCMS-based school and have been in Christian schooling since I was in preschool. Sometimes studying Christianity enough will reveal the stupidity by itself.
I don't think you know how indoctrination works. It's difficult to see sense after going through that since it's been hammered into their brain at a young age. If you tell a child that they're going to hell if they don't listen to what you're saying and enforce that until they're an adult, they're going to have a lot of trouble getting that out of their head.
If someone told you the same thing for 18 years, over and over and over, it would be stuck in your head for a long time before you can reason it out.