Style, decoration and usability are not mutually exclusive. As with many disciplines they can co-exist beautifully. Frank Lloyd Wright's buildings wouldn't look much chop if he hadn't taken style into consideration.
Not to undermine the argument, but Wright does not prove the mutual inclusion of style and function. His buildings are notorious for structural problems.
Agreed, but effects like this are not style, they are a cheap veneer applied to otherwise poorly thought out designs. Fashionable kitsch integrated into otherwise unoriginal, uninspired designs.