I will also come out and say that I think part of the popularity of Demolisher is due to the relative unpopularity of the VSD.
When you are building an imperial list and looking at points, Demolisher (naked) is 66 points at a bare minimum, more if you take a GSD2 (but why). A naked VSD1 is 73 points, which is one upgrade away from Demolisher.
But the VSD is slow as hell, and everyone knows that and exploits it. The Imperials, at four ships (vs the Rebel five, who in the same points neighborhood have the Neb B escort with its titles, the MC30, and the AF2), simply don't have other options.
This is not to deny the power of Demolisher, but also to say that as flotillas (uniquely equipped to block Demolisher) and more ships arrive in the next two waves or so, this problem may solve itself. Patience is probably the correct response here. In a technical sense, if all the Imperial ships were equally liked and played, you'd expect to see it in 25% of lists, so it's not totally crazy with the showing here.
Edited by Reinholt