The article has mentioned the Fairy types counterargument towards Light types:
"Others bring up the Fairy type and its bright, shiny, flashy attacks, which in their minds cover the niche of elemental light. However, this isn't actually the case–Fairy attacks are closer to a combination of magic and the trickery classically associated with fairies in Western myths and legends. Even the Fairy moves that most closely resemble light have more going on: Dazzling Gleam is magically altered light (it's called "Magical Shine" in the original Japanese), and Moonlight's Fairy classification comes from how the moon is often associated with magic in folklore (which is also how Moonblast works, by drawing that magic power from the moon)."
Digital versions of XY can use smogon's program called Keysav to back up the save file and view shiny values of your eggs. If you bought the physical version, you need to buy the new 3DS Action Replay (called the Powersave) to first back up your file.