The Gyrodyne is not intended to be deployed, actually, but the facilities to allow one to operate from the quarterdeck still exist. The aft directors have existed since the ship was built, and the armament has not been reduced all that much, really, and I assume the 5.5" and AA suite still need direction.
The setup and fit is as elaborate and complex mostly because the ship is unusually well suited to support it; any other ship would require extensive structural alterations (turret and barbette adjustments, for example, plus new deckhouses) or be new construction, while the large hangar and empty spaces aft make all this rather convenient.
Going all the way back to the RCN's pursuit of automation for it's 5.5" arsenal, Canada's doctrine has always been to push concepts as close to viability as they can on initial deployment, even if the technology will take time to mature. Will it be able to ripple-fire it's entire magazine during it's shakedown cruise? Of course not. But for now it has redundant equipment in case of failures, and alternative methods available to test.
It's also an economic consideration; it's cheaper to put the ship out with all this equipment at once, than a series of sequential refits. Ever since I ended up with this ship from Oz, I viewed it as a ship that would be constantly refitted as a testbed, but our economic rules have made me limit how often I actually refit it.