I am a Hindu and definitely against the expansionist philosophies of these religions. But isn't the mainstream nationalist narrative too pushing the same Hindutva-Hindi homogeneous propaganda? And diversity is not only about religion either.
As someone on hn I am sure you know how much more nationalist and mono cultural much of the world is.
I am from TN, the amount of power these "minority" religions hold is unbelievable.
As an example, Loyola college in Chennai is totally under the control of the church so much so that being a Christian gives one preferential admission or skip the queue.
What many people do not know is that the campus property belongs to a temple and the salaries are paid by the tax payers. The Church has disproportionate control of an institution to which its contributions is practically zero.
India has not completely decolonised.
What I also don't like is people influenced by one (Hindutva) ideology of Modi turning into fascists slowly, and anyone who criticises Modi for unrelated (eg economic) reasons is called anti-national. Being strong Hindutva ideology shouldn't give him a pass in other areas.
Never mention Savarkar's "Hindu Atheist" progressive ideology shadowed by current RSS activism and them using all kind of religious sentiments to get high PR. Congress is fucked up minority appeasement party, I am not a Congress supporter. But what I am saying is BJP is not doing much better.
This has been going on for centuries.
The BJP is just a reflection of the sentiment of the people.
For instance temple taken over by the state, what used to be run by unique communities is now run in a uniform way.
There is also an attempt to Abrahamise Hinduism by the left and the educated elite/judiciary. To defend itself in an unfair battle field, Hinduism is taking on the shape of a monoculture.
To simply understand this point, forcing exclusive use of Hindi in Central government institutions gives an undue advantage to people from North India.
You mention in principle, but in practice the opposite happens. I am an East Indian who has spent all his life in South India I speak both Hindi and a South Indian language along with my native tongue. When North Indians come to South India, and stay for a long time a majority of them refuse to learn the local language whereas every South Indian who has spent time in the North picks up Hindi.
Hindi translates easily to tamil, compared to English. I do not approve of forcing a language, however I do not see it being forced in anyway.
Contrast that with forcing native people to fill bank forms in English, or the fetishization of urudu.
Forcing is unnecessary as people are understanding the utility of hindi.