In my opinion the current volatility is more a sign of the immaturity of the investors rather than the underlying concept being flawed (many markets are conceptually flawed and absurd from an independent viewpoint however human psychology maintains some weird interest in them that keeps them afloat)

The current volatility is clearly a bubble and the best explanation that I like is that all these computer nerds across the world who haven't been involved with stock markets before have dropped their cash on bitcoins and facilitated the bubble and are unaware of the law of bubbles; that is; that they pop