Actually, no. On the outset, what you're arguing for seems reasonable, as you're advocating for the Western style of secularism. The problem with that is it dispels all religions equally, which means all religions are equally bad, and that the state is moral arbitrator for the public through the rule of law. There are three problems with that:
"Hindusim" is not really a religion, but has devolved into one (by devolve I mean become decidedly Abrahamic in nature and practice). This is obviously a political reaction. Not going to go into detail, this has been beaten to death.
Let's assume it is a religion. If you've read any of the Bible, Torah or Quran, something should strike you very clearly. They are all absolutist and they all claim to have a monopoly on the truth. They are prescriptive. You can see how thats turning out as an ideology in literally every part of the world (Middle East, Israel, Bible Belt in the US). Hinduism, on the other hand, is descriptive. It has evolved consistently over time, there are many schools of thoughts that reasoned it out through academic debate (unlike, you know, crusading and invading) and holds many philosophical conclusions about metaphysics and ontology. There is no superiority or inferiority, only thought.
When the state gets to be a moral arbitrator, its inherently corrupt, especially in the political systems that we have today. See: US corporate personhood, lobbying, money in politics, NSA spying, Patriot Act, TTIP in Europe. The list is endless.
Now, of course, the reaction of many here would be that this move should not be made, and thats valid, because there is a lot of room for the government to perpetuate propaganda about Hindu superiority. However, if it is done right, there really is no need for the outrage, because Indians need to realize the truth about this whole Hindu thing.
Source: Born into mixed religious background of Abrahamic/Hindu. Read the Quran and Bible and the main Hindu texts (how many people who have such strong opinions on either "side" can say they've done that?).
There are no sides to this, only whats necessary for progress: understanding the local narrative that will help us push past our problems, which needs to come from the geography it evolved in and which requires inherently a rejection of Western thought.