I'm not sure if a up tempo operations' doctrine would make sense for a ship like this, where the primary mandate is still to perform and support amphibious operations. Every other such ship in the world, including all of the American LHAs that are outfitted as "harrier/lightning carriers" would need more than one launch position for fixed wing aircraft. Even full sized carriers like the QE sometimes have a single launch position.
So unless this is in fact not an LHA at all, but a medium carrier in doctrine and practice from the ground up, aka a non-nuclear CdG, I would have a very hard time believing that it needs multiple catapults. Whether unmanned or manned fixed wing does not really matter. So I would take any evidence with multiple catapults with a massive grain of salt, unless incontrovertible evidence exists somewhere.
Having two catapults means better tempo in situations when two cats are required.
It also means new roles are now available for this class. Including that of light or alligator carrier that the US America class is occupying.