We will identify all these functionalities and we will have to have a regulation for each functionality such that equivalent activities are regulated in the same way, regardless of the technology behind them. So you have no concerns about these currencies? They are not currencies.
Dynan, Elmendorf, and Sichel (2012) documented a rise in household income volatility from the early 1970s to late 2008. In contrast, studies such as Celik and others (2012) do not find a rise in household income volatility in the 2000s. Koo (2016) shows a rise in earnings volatility in the Great Recession.