Questioning the Gold Standard

Many libertarians and conservatives are big proponent of the classical gold standard similar to what we had in the late 19th and early 20th century (I don’t think anyone is an advocate of the mid-20th century breton woods gold standard). I personally am a free banking/competing currencies advocate, and in this video I question the idea of an ideal system, and whether what would make an ideal currency is what we usually think it should be.