Because 95% of them are just larping/non serious/pretentious Christians. If they followed the teachings of the fictional character Jesus or God they would behave very differently.
If they read the book and honestly examined it with even a modicum of skepticism they would likely not be Christian.
It's always amazes me how little they actually know about the subject. They don't read the fine print just hit accept and pretend like they will go to a special place after death.
i dont think its right to get locked out of the conversation so quickly right from the first percent. even most? of the GCers dont want it.