I would trust that if it was the actual markbass site, but on a store website, not necessarily. All kinds of inaccurate info on sites where they sell stuff. I agree it doesn't really matter though. I think China can manufacture just about anything you ask for, quality wise.
That is not an argument. If you do not trust sources provided by me, and claim them to be false, it is in your responsibility to provide better data.
Typically, the manufacturer homepage is the last place a consumer will find such information. At least for products manufactured "abroad".