You just don't get it, right?
This is similar to nothing else. DASH is on its own way. Nothing else. Except the part where Bitcoin weaknesses did it to all top alts.
I get the underlying structure, yes. Every currency is on its own way, ultimately. Bitcoin uncertainties, agree, another factor.
The shorting ability merely adds fuel to the rally, and is an additional factor.
Price doesn't move one way indefinitely, whatever its trend. It is helpful to be alert to the possibilty of falls as well as rises.