That is a ludicrous statement and I guarantee not one Special Operations soldier carrying a pistol in .45 ACP would agree with you. I suppose you consider any affinity for the Browning Machine Gun, Cal. .50, M2 and the .50 BMG (12.7×99mm NATO) cartridge "only nostalgia" because that's a 100 year old weapon shooting a 100 year old cartridge.

By the way, the 9×19mm Parabellum cartridge predates the .45 ACP by a few years. Using your logic, any love for the 9mm must only be nostalgia.