Modern frigates and destroyers in cruiser roles

Given the size of modern frigates and destroyers, are they all cruisers and presence ships?

In peacetime, many modern surface combatants do perform the cruising role, which keeps the cruiser label tied to function as much as hull type.

Formal classification and operational work do not always match. Modern frigates and destroyers plainly fill the peacetime cruising role, leading to the deliberately broad claim that all ships are cruisers in that functional sense. Modern surface-combatant labels therefore remain part of the same long-running role problem found throughout cruiser history.