If the scaling hypothesis is true (seems to be more and more empirically true over time) and if you plot the line, it’s a continuous improvement to more and more advanced reasoning and capability. There doesn’t seem to be any obvious upper limit. 

 sure, maybe, the idea that LLMs are full artificial intelligence seems to have, always been based on a belief in logocentrism, as well as that cognitive psychology is a complete representation of what our brains do, i think this is questionable