If I remember correctly Keyguy and I said that a few of the religious stories within the Lafkalle Cooperative would be from the Equestrian's religion, thus causing Equestrian Religion to rapidly spread to them.

Also Gods and Goddesses do exist, as very power beings, however we are not allowed to do OP things with them or risk keyguy bringing out the banhammer. We can however do subtle manipulation and communicate with a very small amount of people with them.