3D printing and lost PLA casting is a valid process. And is something that can be done in your own backyard if you want. Aluminum and brass are common metals used by home casters. So it’s kind of cool to see.
As an old toolmaker, I do take exception to this being called “Damascus”. To even call it pattern welded even would be very generous.
If you are willing to spend the money, I would highly recommend a Prusa. The quality of service and support alone is worth the extra money. If the cost of a Prusa bothers you, I would point you at Qidi as a more budget friendly brand. If I was starting over and looking to buy my first printer, I would be looking at the Core One or the Qidi Plus 4. And Qidi is set to release their own AMS called the Qidi box for the Plus 4 here shortly.
Edit to add: There is nothing to fear from Klipper. MainSail is easy to pickup and use.