In my view, an LHD is what it is, a helicopter carrier. But in combat, LHDs are liability, unless the operator navy, has enough ships to protect it. Even so, an LHD's usefulness, isn't all that. Not unless you are a proper naval power (and there are just two on count today) And let's be honest here, in today's age, there aren't many naval powers around. The only context where LHDs are relevant, is when a non-naval power country is part of a larger military alliance (NATO, or SCO). There these LHDs can perform their tasks in the protective ring of Air Defense Destroyers/Frigates and ASW Corvettes. A regular navy, which isn't a Blue Water Navy (as they call it), doesn't really have any strategic application for LHDs in actual war.
By definition, LHDs are helicopter carriers. Which is specifically limited to "Rotorcraft." Again, only those countries (and there are just a handful of them) who have the economic clout, may choose to integrate VTOL/STOVL aircraft (fixed wing) on their LHDs. The cost doesn't justify the capability, unless that particular country is part of a larger military alliance or the country itself has an annual military budget of $100+ billion. So for me, these LHDs are more of a fulfillment of vanity than anything else. In real war, they serve their purpose in the logistics supply lines at best, or a floating theme park at worst.
Real requires real weapons and platforms which prove their worth in situations which arise unexpectedly. And war is all about expecting the unexpected.