Similar garments to the saree were developed in almost every civilization. The saree was in no way brought to India by Muslims, since it was worn long before Islam was created.
So how do you explain the thousands of years of South Asian culture, civilization, and achievements in various fileds long before Islam was even a religion?
Dravidian culture achievements yes. I heard of cholas, pandyas spreading abroad to other countries. And Budhism too was primarly south Indian with humongous stupas in Andhra and eventually only Sri Lanka in deep south came budhist. But I dont know of any achievements of cow belt apart from caste apartheid and mind numbing poverty, communal riots. even temples are diminutive and nothing like massive temples in south. Everything explained away with convenient excuse pf "muslim invasion"