Regardless of what is true and what isn't, IF they were just using Chinese machines that are already available, then why is their machine still pre-order after all this time? You would think they would have it available to order now and just use the already existing Chinese machine.
I'd say it is almost certain that their products are manufactured elsewhere, which may be one cause for a delay in news with shipping setbacks. But this can be said of most products these days so it isn't necessarily a burden when you consider that.
Perhaps they can find somewhere in the US to produce them and increase the price accordingly. It would show a reaction to current trends and a desire to be able to meet people's needs.
It's all up in the air.