An LLM isnt a model of human thinking.
An LLM is an attempt to build a simulation of human communication. An LLM is to language what a forecast is to weather. No amount of weather data is actually going to turn that simulation into snow, no amount of LLM data is going to create AGI.
That having been said, better models (smaller, more flexible ones) are going to result in a LOT of practical uses that have the potential to make our day to day lives easier (think digital personal assistant that has current knowledge).