The Ancestors were from Africa and entered into Australia 50,000 years ago. They would have eaten food from indigenous life from their area almost immediately. They harvest most of the day, and eat this food. The AM looks like a food source they already eat in Africa. It is highly likely they did eat it. This is still not enough to say it had connection to religion, but it is enough to say they ate it, in all probability. Forensic DNA shows again that they did eat it, as the retrovirus that was on Amanita Muscaria can only be transferred via consumption by humans and it is known that AM is a vector for this virus. Since they forage daily and consume what they forage it puts the consumption just around the time of 50,000 years ago.
Leviak B. Kelly, Religion: The Ultimate STD: Living a Spiritual Life without Dogmatics or Cultural Destruction
amanita-muscaria, religion, virus