No religion other than Christianity and Islam fought for a man made religion. They haven't slowed down after wiping out thousands of cultures and tribes
Unless you think that Judaism, Hinduism, Buddhism, Shinto, Daoism, or the many millions of polytheistic cults are not man made religions, then you are completely wrong. Wars and atrocities have been fought using every religion and ideology in history as a pretext.
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That's a pretty strong statement. You know the saying: strong statements require equally strong evidence.