I'm not entirely sure how any of this matters. Tools and what bar they have to pass are just design choices. If you design a tool to be bad, it will be bad, no

I'm not entirely sure how any of this matters. Tools and what bar they have to pass are just design choices. If you design a tool to be bad, it will be bad, no matter who manufactures them or where. At the same time, if you don't have good quality assurance/control and no tests that the manufacturer has to pass, then the design doesn't matter, because the product apparently doesn't have to meet the design specification and the whole design is practically arbitrary. The only true change to the product that could happen is either a design change, or a change in available resources. Some multi-axis CNC machines are apparently not legally available everywhere in the world, so that could be a locality factor. On the other hand, plenty of companies design assemblies with complex components manufactured in various places around the world to be integrated elsewhere later on.