Your own reference explains how the AI responses are more than just random words put together nicely, and I can and have fact-checked it. It’s not a trustworthy tool for many things, but it is useful for language-based pursuits, because language is precisely what it’s designed to work with.

For example, I’ve recently been watching a Chinese period drama and asked ChatGPT what various words were by transcribing how I heard them and explaining the context. It gave me accurate hanzi, pinyin, and definitions as confirmed by dictionary sites. It’s been a very valuable tool to me for language learning.