Of scraped knees and broken legs; an observation on Blaine and Jefferson

Thanks to Rick for the pointer to the WSJ piece on the use of Blaine Amendments. I liked this paragraph near the end of it, in which the author explains the benefits denied by application of a Blaine Amendment to forbid a religious school from receiving a state grant to resurface its playground:

Although the playground-resurfacing program in Missouri provides aid directly to schools, the program’s environmental and safety goals are entirely secular. Those recycled tire bits are not going to indoctrinate the children playing on them. Rubberized playgrounds might save knees and the environment, but they do not save souls.

The claim seems something like the legal contrapositive (if that makes any sense) of Jefferson's comment about why his neighbor's religious beliefs (in comparison with the government's) did him no harm: 

The legitimate powers of government extend to such acts only as are injurious to others.  But it does me no injury for my neighbour to say there are twenty gods, or no god.  It neither picks my pocket nor breaks my leg.