Language is primarily a tool for communication rather than thought - Nature

Instead, language is a powerful tool for the transmission of cultural knowledge; it plausibly co-evolved with our thinking and reasoning capacities, and only reflects, rather than gives rise to, the signature sophistication of human cognition.

So, I guess, while the LLM approach to AI does do a good job mimicking the effects of our intelligence, it probably can't really recreate it on its own

https://gwern.net/doc/psychology/linguistics/2024-fedorenko.pdf