TEPaul,
Most definitions of landscape architecture center on arranging the landscape for specific human uses, much as the building architect arranges a floor plan for interior human uses.
It is entirely possible to have a landscape arranged without the art principles - in fact, urban planning is related to landscape architecture, and many engineers lay out cities on a strict grid for economic, as well as world view reasons. (Organizing things symetrically is the way they are taught....)
In golf course architecture, we like to apply both the site arrangement elements (ie, 18 holes of some generalized amount of length and combinations of par 3, 4, 5, practice areas, clubhouse and maintenance, et al) in ways that have been learned through experience over several centuries.
Knowing artistic principles can never hurt golf course design. I do agree that the trend for a long time, and perhaps continuing, is to eliminate quirk, which most people would simply say is learning through experience what works for the most people on a golf course, including the superintendent, course manageer, better and average players.
I pursued a landscape architecture degree because it gave me the technical skills and artistic principles you mention to pursure a career in golf course architecture. Capability Brown certainly had no similar formal training, but intuitively knew those principals. Alistar McKenzie had no formal training (save the camoflage work, although I think that was part marketing story, myself) but understood those artistic principles. I didn't become a golf course architect until apprenticing with a respected firm that taught me the unique aspects of that field.
Golf course architecture and landscape architecture are related fields, and GCA is not a branch of LA. Again, semantics, but there are several related and similar skills required, but other skills that are unique, and learned only through apprenticing in your respective field. Ie, Landscape architects aren't automatically golf course architects, and vice versa.
Norbert,
"Landscapping" is the frosting on the cake for landscape architecture, after the elements are sited properly. For that matter, I really think that the game of golf comes first in design - not the land. This may be "semantics" since we try to disturb the land the least for a variety of reasons, like economy and artistic principles, not every site allows that.
While not arguing that it takes great land and a design well suited to that land to create a great golf course, if you followed a "Land first" philosophy too strictly, you would more than likely have one crappy golf course on most sites, so that isn't the right order of thought, IHMO.