Your ideas about the role of religion are interesting. I have been thinking about Toynbee’s suggestion that Christianity, Mohammedanism, and Marxism are all Judaic heresies. I have been toying with the notion of cultural evolution, taking religion as one of the chromosomes of a culture, and thinking about the dogmas of a religion as genes in that chromosome.
In a sense, “our god is the greatest god” and “we are the chosen people of our god” were early genes in Judaism. The mutation to “our god is the only god” (monotheism) was one step toward forming a cancerous combination. The mutation to “any people who believe in our god are chosen people” was another step (characteristic of the three heresies but not of Judaism itself). To some extent, each of these heresies became “a militant and proselytizing faith” in Winston Churchill’s words (https://en.wikipedia.org/wiki/The_River_War).
Perhaps I am ignorant, but I am not yet aware of Jewish missionaries in the Amazon rain forest or the Congo jungles assiduously converting aboriginals into “chosen people.” I am aware of the history of missionaries in North America and their effects on the aboriginal populations and of the efforts of missionaries to save the souls of uncivilized heathens and pagans in India, China, Japan, etc.