Regardless of how much work was done offsite, it's still a unique feat to see an empty lot turn into a 30-floor skyscraper in such a ridiculously short amount of time; there's no doubt it's mentionworthy. However, as others have mentioned here, it doesn't look like anything to cheer about in terms of real quality or durability. There's a reason our methods take longer.
I suppose my point is that it isn't unique, either. They've been doing this for years and there are videos galore including past submissions on HN as I linked.
