So I heard that this book was banned (or ceased publication due to pressure) in India.
I assume most historians would be for free speech and discourse, so I'm not asking about the ban itself. Is the history presented in the book legit? What exactly in the book pissed people off?
Hindusim, as it's practiced today–as with much we think of "traditional" in India—was heavily influenced by British colonialism, both in terms of what the British thought it was and should be, and as a reaction of Indian intellectuals to what the British thought about it. Doniger points out the big, messy, and diverse nature of Hindusim. This contradicts modern orthodoxy.