If these nutcases consider this stuff art, that's their problem. If they are using taxpayer dollars to pay for it, that affects me. It would certainly be a violation of the separation of church and state, not to mention a waste of tax dollars.
You can almost guarantee that you tax dollars paid for this "art".
That's long been my thought on the subject too.
Produce all the crap you want. Just don't expect the taxpayers to pay for your "creativity".