I think I’d agree with your statement, in the same sense that a chess simulator or AlphaGo are superior to human intellect for their specific problem spaces.
LLMs are very good at a surprisingly broad array of semi-structured-text-to-semi-structured-text transformations, particularly within the manifold of text that is widely available on the internet.
It just so happens that lots of code is widely available on the internet, so LLMs tend to outperform on coding tasks. There’s also lots of marketing copy, general “encyclopedic” knowledge, news, human commentary, and entertainment artifacts (scripts, lyrics, etc). LLMs traverse those spaces handily as well. The capabilities of AI ultimately boil down to their underlying dataset and its quality.