What would be the need for pure Hindu, anyway? Never mind I have a hunch that they don’t regard, for instance, Saktah as “truly” Hindu.
I’d certainly also be worried about Christians, Jews, atheists, and perhaps even Buddhists. And back to the above, this also sounds a little like the Tokugawa bakufu and/or Co-Prosperity Sphere trying to standardize Shintou (they got the idea from the kind of power the Papal States had enjoyed in Europe), and thus effacing quite a few traditions.