This doesn't sound quite like the procedural generation I was thinking of. This sounds more like inserting items and things into the world around Aloy and not about generating content in the form of something like No Man's Sky. In fact it sounds like something more on the developers side of things to help streamline game creation and content editing unless I'm misunderstanding it. Still cool but its not like they're generating random robo creatures for you to fight or anything like that or anything that translates into stuff directly affecting the player on the fly.
Well, this.
I forgot about this though this isn't really doing anything all that crazy in terms of procedural generation. Its basically generating a basic quest line probably out of some templates to give you a piece of crafting material.