I think it's phrases like "some shady Chinese-language Windows-program". There are hints of a certain kind of English language chauvinism throughout the article. It's not surprising that a Chinese product aimed at the Chinese market is documented in Chinese. This doesn't make it obscure or shady.
As an imaginative exercise, try replacing 'Chinese' with English/American and see how the article reads.
As an imaginative exercise, try replacing 'Chinese' with English/American and see how the article reads.