Strange, considering the next big thing in military thinking (other than urban) is a shift to littoral focus, preparing for the Pacific shores to become the battleground. Read up on the Marines' major self redefinition currently going on.
Sure, but the Marines' Force Design 2030 is centered on the PRC, and the Taiwan invasion in particular. Littoral ships would be disastrously awful for that mission? The PRC strategy is land-based antiship missiles, and LCS are survivability level 1 ships with aluminum hull/superstructure and a single CIWS turret. In a shooting war with China they would evaporate.