That one is neat ... near as I can tell, it’s a welding machine ... just lays down layers of weld. Molten metal. Not terribly accurate, still some machining to do after the part is built. Printed. Whatever. It’s supposed to be faster than starting off with a forging or casting.
Also uses a LOT less raw material and generates a lot less waste.
Think about it, in standard machining, you start off with this big chunk (of sometimes very expensive) material, and then THROW MOST OF IT IN THE TRASH. When you're talking Hastelly C or titanium, that can become a HUGE factor.