Should the early Arleigh Burke flights be classified as frigates by today's standards?
Short answerNo. Warship categories are relative to the technology and role spectrum of their own era, so later growth does not retroactively turn earlier destroyers into frigates.
NotesEarly Arleigh Burke flights remain destroyers even though later destroyers are larger or more capable. Capital-ship labels show the same effect: Hood's protection can resemble an older battleship, yet the contemporary spectrum still placed her differently. The unbuilt G3 and N3 designs make the point again because their relationship would have defined battlecruiser and battleship roles within that generation. A 10,000-ton ship can therefore be a large cruiser in one era and a frigate or destroyer in another without making the terminology inconsistent.