I don’t think we are importing anything from India. What we are doing is trying to make a reasonable effort to accommodate the beliefs of a religious minority; I don’t see anything wrong with that.
As to Sikhs begin treated like dirt in India, you are totally wrong here. Sure Hindus have a caste system; India in general has plenty of problems. But one feature of India, perhaps unique to a third world country is that many religions coexist peacefully there. Hindus, Muslims, Sikhs, Christians, Buddhists, Zoroastrians (they even have a small population of Jews). Sure, there are occasional flare ups, but by and large, many religious communities manage to live peacefully in India.
And Sikhs do very well in India. Most of the Sikhs live in the state of Punjab, which is the most prosperous state in India. Sikhs by and large are quite well off in India. They have freedom of religion. They even have a Sikh as the Prime Minister.
So sure India has plenty of problems, but to claim that Sikhs are treated like dirt in India is total nonsense.