Frank and his compatriots treat the gold standard as a slightly ludicrous (and possibly alarmist) anachronism and as a tool by which the wealthy oppress workers.
Your right to religious freedom does not allow you to oppress others, and the right that you may subscribe to others may not necessarily be a right at all.
Madison failed to appreciate how vulnerable large republics would be to the inevitable emergence of coalitions of minorities under majority rule knitted together both contemporaneously and over time to rent seek, logroll and oppress.