@BenRossTransit it doesn’t assume any service is used involuntarily, unless paying less taxes / accepting money is “using a service”.

a child allowance with a phaseout is equivalent to a universal child allowance plus an extra tax oddly levied solely upon parents earning more than the cutoff.

no one uses a service, nothing is “voluntary” beyond weird arguments people could choose to give the US treasury money to which you would otherwise by law be entitled.