For one, it will be a lot faster to compute. For two, it is a lot less laborious work to set up, which does not scale with the size of the world like PBR, but o

For one, it will be a lot faster to compute. For two, it is a lot less laborious work to set up, which does not scale with the size of the world like PBR, but only with performance. So where previously, you needed a lot of designers to make a big world look realistic with PBR, now you need to collect a big dataset with the style you want to have, and apply it to your game. I suspect that will scale differently.