Actually, they were already destroyed by the time British Raj came to India. It was due to Islamic rule/colonization. Between 10th century and 15th century (for 500 years) there were no intellectual works in eight domains, as Sheldon Pollock noted in his paper "Sanskrit knowledge on the eve of colonialism and at the dawn of globalization".
You might want to check that. We recently saw the new documentary movie on Ayurvedic food and eating. They had a section on how the British destroyed the schools (including Ayurveda schools) and generally used maiming and other extreme punishments.
I am not picking on the English, all empires do really rotten stuff. I can’t think of one exception.
I agree with you. When you look at postcolonial arguments, they make it sound as if whatever sins we see in India is due to British colonialism. However, the same postcolonial scholars are silent on the Islamic colonialism.
Having white skin doesn't make false whatever Pollock says. Similarly, having brown skin doesn't make true whatever a brown person says.
Just evaluate arguments independently of one's color. I am not saying that whatever Pollock says is true; instead, I am bringing in a specific point, for which Pollock adduces evidence.