As much as I want to support this movement wholeheartedly, I see a danger in the absence of forced indoctrination. It could be soft social pressure, of course; not the force of oppression and obligation. Consider the following: a major religion is explicitly loyal to a given state's policy, national values, and ethnic traditions. If people don't have that, they will look for "spiritual" answers elsewhere: foreign influences that are not always benevolent (almost always hostile?) and just as much irrational.
We have learned it the hard way in Ukraine, fighting with Russia's pet state-curated church that promotes their language, denigrates everything Ukrainian, and throws imperialist lózungs left and right. Basically, any colonial-mindset warmonger would be happy to place their own religion on the occupied (or not yet occupied) territory.
RE: Children's Rights: International Day of Protest Against Hereditary Religion