A simple array of English words is often better than a full, well-written Korean sentence(s).
Are there some hard numbers on the latest models?
Am I not seeing most of the article?
On the content: speakers of a single language don’t realise this is the case, although they’ve always known that non-English countries tend to get worse service in general in software (like Siri voice, or speech recognition (and if you speak a minority language of your country, even worse), map services, or sometimes just the LLM answering with US customary units that you don’t understand nor expect, etc.)