I found this funny. That's a fair call on the slicing/dicing, except I'm pretty sure the traditional way to make fried rice is to throw in whatever leftovers you already have to hand.
So if you're already cooking other Chinese food, fried rice is just a mostly-free leftovers dish. It works as part of the entire Chinese-food cultural complex; it's harder to slot in to a schedule of foreign food, where every element of it has to be prepared specially.
(Of course it's popular in restaurants now, and they must make it in a consistent way. But you don't need to.)