Prologos said " why was it not put in the fiction shelfs earlier". ?
I think it is a matter of Evolution. Mankind has gone through several Periods where the brain has evolved to what at the time was a "thinking outside the box" moment.
For example, it is evident from archaeological findings that man gradually learned to Trade goods, but a lot of the Trader's contempories took a good while to latch onto the fact that he was using his talents to get things he needed without actually working personally to obtain those things.
LIGHT BULB MOMENT ! But, only a few people got it, they toiled whilst the smart Traded.
Capitalism was born, but it took a long time to be the main driver of economics.
It is the same with Belief and Religion, those of us who have worked it out are ahead of the game, the other poor saps will catch up one day.
But,when they do, the Bible, the Quran, and the Talmud and all of the trash that people hold as sacred now, will be on the Poor Fiction Shelf, better still, the Hardly Worth Reading shelf.