This is the context in which they said that bit about the factories; makes sense, just a silly way to say it...
But Chi-Fi isn’t the end of the conversation, because the best factories in the world for audiophile components are located in China and Vietnam. Simply put, unless you are buying Rolls Royce-level products (think: handmade by artisans in an expensive locale), the chances are that your next audiophile upgrade component will be made in China or at least sourced with parts from the country.