This is the way I see it from a manufacturers standpoint (I'm a manufacturer btw.....)
Vortex manufactures nothing.
Vortex imports the products they offer for sale.
Vortex maintains a domestic R&D group to tune development and dictate changes/improvements to the line which is made offshore.
Vortex is aware of quality differences concerning country of manufacture, consequently, they balance profit against build quality to obtain a reasonably priced product with a reasonable profit margin.
The last statement is why anyone is in business. The only 'non-profit' ventures are churches and establishments of higher education...supposedly.
While I don't necessarily agree with the premise of offshore manufacturing of any hard goods for a lot of reasons that don't need to be aired here, bottom line is that most optical and electronics based hard goods are manufactured offshore and the ones made here, are manufactured from imported parts. Thats how it works.
I suspect that if you turn over the lap-top you are posting on or look at the label on your desktop, you'll find that it wasn't made in USA, but rather some Pacific Rim country and with great probability, China.....
Optics (as well as many other discretionary purchases) is/are based on what the buyer perceives as a quality item, no matter where it's manufactured at.
Country of origin has little to do with that perceived quality. What the purchaser is comfortable with and what the purchaser feels is a good price versus performance is the important factor.