On weekend afternoons in Almaty, Tashkent, or Bishkek, groups of teenagers practice synchronized dance routines in parks, shopping centers, and university courtyards, their clothes echoing the polished style of Korean idols. BTS, BLACKPINK, Stray Kids, NewJeans, aespa, SEVENTEEN, and many other groups fill their playlists and social media feeds. Some are filming dance covers for…