In much of the literature on banking, such interventions are seen as the primary method for dealing with run-like liquidity problems. A classic statement of the central bank’s role as an LOLR is Walter Bagehot’s 1873 book Lombard Street.
A smoker knows a bad cigarette from a good one. So, he will keep the good cigarettes and trade the bad ones. 1/3  BIS - Central bankers' speeches  So, we expect that all these problems will happen as well to virtual currency. There are many competing ones, and even the ones that survive will have problems because of all these issues.