Secularists See Hinduism as 'Cultural' and Islam as 'Religious'

The discussion and debate around the banning of hijab in schools for being "religious garments" that cannot be allowed in secular educational institutions place the onus on hijab-wearing Muslim women to explain their piety to an audience that is fundamentally suspicious of 'religiosity,' and identifies unanimously as 'secular.' Of this secular audience, most are wondrous about Muslim women choosing to participate in their subjection by wearing the hijab (the ultimate symbol of oppression) and as vanguards of liberalism, they "support their choice" of wearing it in the name of 'agency and free will.' The implicit ask is for hijabi women to explain themselves as religious subjects in 'secular' India. But has India really been 'secular'? Or have practices of Hinduism been secularised in the name of 'Indian' under the category of 'culture'?