Who cares about fashion? If something looks good, it looks good, even if it's not fashionable. It's like saying the style of a nice Gothic cathedral has fallen out of fashion, it still looks better than a concrete and glass box.
Correct about fashion, but wrong about the icons. Glassy icons are like concrete boxes, not cathedrals. They never looked good and were just the fashion for a while, like shag carpets or powdered wigs.
Oh come now, as long as you don't overdo it cut glass looks neat. Millions of crows and magpies can't be wrong.