The article is just making stuff up here:

> Total U.S. bank deposits are around $17 trillion. Meanwhile, total wealth in this country, including nonmonetary assets, is around $149 trillion, more than 63 times the total available cash. The gaps between these numbers are like dark matter in the universe — we don’t have a way to empirically account for it, and yet without it our understanding of the universe, or the economy, would collapse.

There's no reason you would expect these numbers to be the same, and nothing relies on them being the same.