The ancient Hindus were originally monotheistic according to their own original primary ancient texts before they deteriorated into polytheism. As I have proven above with direct quotes from the primary text of the ancient Hindus. So they agreed with me in theory.
Their adherents took actions over thousands and thousands of years in practice that does not align with their ancient texts, however the point that the ancient Hindus were monotheistic according to the tenants of their own faith is valid.