Rohanmore was a leftist who used to say things about Hinduism which are not acceptable to Hindus. How can he be called a Hindu nationalist?

I didn’t know much about him before but someone showed me a post from 2010 in which he said that Hinduism should be abandoned and that we should adopt the scientific method in place of Hinduism. He also said that Zubair is the biggest hindrance to Hinduism being abandoned.