Harsha (last post) was a convert to Buddhism and was the last Indian Buddhist ever to rule an empire. Had any of the Guptas been personally Buddhist? Which of the Kushan emperors were Zoroastrian? Were all the Indo-Greek kings personally Buddhist? Were all the Mauryan emperors after Ashoka personally Buddhist?
Wikipedia, slightly edited: “The distinction between Hinduism and Buddhism in India was purely sectarian and never more than the difference between saivism and vaishnavism [Buddha was an avatar of Vishnu] [my bracket]. The exclusiveness of religious doctrines is a Semitic conception, which was unknown to India for a long time. Buddha himself was looked upon in his lifetime and afterwards as a Hindu saint and avatar and his followers were but another sect in the great Aryan tradition. Ashoka was a Buddhist in the same way as Harsha was a Buddhist. But in the view of the people of the day he was a Hindu monarch following one of the recognized sects. His own inscriptions bear ample witness to the fact. While his doctrines follow the middle path, his gifts are to the brahmins, Buddhist priests and others equally. His own name of adoption is Devanam Priya, the beloved of the gods. Which gods? Surely the gods of the Aryan religion. Buddhism had no gods of its own. The idea that Ashoka was a kind of Buddhist Constantine declaring himself against paganism is a complete misreading of Indian conditions. Ashoka was essentially a Hindu, as indeed was the founder of the sect to which he belonged.”
Interesting, though not in the style of an encyclopaedia. Indian writers (I notice) often storm into Wikipedia and write or rewrite tendentiously and without citations.