Why did U.S. carriers park aircraft differently?

Why did the U.S. Navy not adopt Royal Navy deck-parking practice at the same time?

It understood the method, but usually operated with much larger aircraft allowances; changing practice may now be putting more aircraft in hangars.

The U.S. Navy understood deck parking, but American carriers generally operated with much larger aircraft allowances than Royal Navy ships. Air-group size shaped how their flight decks and hangars were used. More recent practice appears to place more aircraft below deck. Operating context explains the difference better than institutional ignorance.