The question is, what is Hinduism in the first place?
"Hinduism, as a faith, is vague, amorphous, many-sided, all things to all men. It is hardly possible to define it, or indeed to say definitely whether it is a religion or not, in the usual sense of the word.” [Jawaharlal Nehru, The Discovery of India, New Delhi, 1983, p.75]
“Frankly speaking, it is not possible to say definitely who is a Hindu and what Hinduism is. These questions have been considered again and again by eminent scholars, and so far no satisfactory answer has been given.” [Swami Dharma Theertha, History of Hindu Imperialism, Madras, 1992, p. 178]
“Hinduism defies definition… It has no specific creed.” [Khushwant Singh, India: An Introduction, New Delhi, 1990, p. 19]
“The more Hinduism is considered, the more difficult it becomes to define it in a single phrase… A Hindu may have any religious belief or none.” [Percival Spear, India: A Modern History, Michigan, 1961, p.40]