Yes, but this procedural generation is done real-time on gpu instead of in editor on developers pc. I'm pretty sure other games also do it, but maybe on cpu instead of gpu (I may be wrong).
I wonder, what's the advantage of this? Is generating placement info realtime faster than just loading it from disc? I imagine geometry doesn't take that much data.
Workflow―the entire map comes together into a shippable state much faster than it would otherwise, and it's much cleaner to make changes and not have to redo dozens/hundreds of hours of work.