Better code and better prose are not great indicators of intelligence. Can it help you survive in the middle of the jungle? Can it grow rice? Can it give you first aid? Intelligence is the ability to learn skills and adapt them to the situation. The importance of skills is contextual. Better prose and code is just education, not intelligence.
Imagine it's 2006, there's no LLM in sight and you're arguing on an Internet forum that growing rice is a better highlight of intelligence than computer programming or writing.
Also it absolutely is not education, as repeated failure to educate programmers without aptitude or drill essay-writing into general population has shown.