The kid could not understand why things like the dietary laws of the Jews were given only to them or why Jesus only came once and then only to a subject people in an out of the way corner of a great empire.Because he couldn't understand that different people will have different perceptions?
So according to that 12 year old boy everyone must believe the exact same thing for it to be real? I bet he went through most of his life not believing anything was real.
With logic like that he must believe the conflict over Israel isn't real.