This is, on their part, an immature conclusion; the reasons for the wording and the placement of Sikhism with Hinduism is due to the legacy of older laws passed before 1947. Before I am misunderstood to be saying that the clubbing together was a British error, let me confuse the issue by saying that it WAS a British error. It lies in the error that surrounded personal law. I really don't feel like going into the details at 2 in the morning, but if
@saiyan0321 can be persuaded to return long enough to explain the details, a clue to the situation lies in the fact that Brahmos insisted that they too were NOT part of Hinduism - most confusing - and demanded their own legislation governing personal law, especially marriage and inheritance. The Sikhs and the Jains, even the Buddhists didn't press home the point, leading to today's unnecessary heartburn.
Of course, now that we have this utterly dense group in power, we will see no progress in the matter, a matter that can be resolved with one short, clear piece of law-making. Our Sanghi idiots will make it a matter of manhood and martial pride, and refuse to budge, leading, if not to anger, to great irritation.
Some of us have been pointing out these potential cracks in Indian unity for more than a decade and a half now. The Sangh Parivar's captivity to the three dominant castes among Hindus, the Brahmin, the Banian and the Rajput, leads them to slight, intentionally, or, even worse, unintentionally, the others - caste Hindus outside that grouping, Scheduled Caste Hindus again subjected to ignominious treatment, Scheduled Tribes, the Dalit and the other religions, Abrahamic and Indic.
There was the Kalidasa meme of the pandit burning for revenge who came across an idiot on a tree's branches, cutting off the very branch he was sitting on, and realised that the man was stupid enough to give him an instrument for revenge. As it happened, after an unhappy start, that idiot boy educated himself and became the greatest poet of those times, Kalidasa.
I am not sure that such an intellectual re-birth is possible for the Sanghi. Take the recent budget, for example; there can be no hesitation in saying that now that poor Rajan Jaitley is no more, our former spokesperson is now the wisest fool in Hindustan.