Does modern architecture show more diversity than architecture from earlier time? In the 50’s RTJ and Dick Wilson were not that much different from each other and there sites were also similar. In the golden age there certainly were differences between CB, Ross, Tilly, Flynn etc. But today the marble on which architects sculpt differ and the form they display truly are incredibly diverse. Look at the variety. Contrast the style of Tom Fazio and Tom Doak not only in shot value but in the visual effect. Throw in Jack Nicklaus and Coore and Crenshaw. Jim Engh and Mike Devries. Lester George and an aging Pete Dye. The canvases are very very different: Arizona desert, Florida marsh, Colorado mts, Oregon coastline, Nebraska sand hills, New Jersey dump ( Bayonne and Liberty National), Forests in the Blue Ridge and on and on.
Now the old guys did have different places. Just look at Seminole, Winged Foot, Pebble Beach, and others. It just seems that the great earth moving equipment affords the architect more options.