I actually agree with this. If you're a first time Star Wars watcher then I think it should be viewed in the order they were originally released. When my son is old enough to understand, appreciate and absorb the films, this is how I will introduce it to him.
It's sort of like the Chronicles of Narnia. Even though The Lion, The Witch and the Wardrobe was the first book published in the series, The Magician's Nephew is actually the first book chronologically. But when read in chronological order as opposed to reading them in the order they were published, it sort of takes away from the surprise and impact of the books for the first time reader. However, if you've read all the books, then it makes sense to go back and read them in chronological order again.
I hope that didn't confuse anyone.