It sounds like you’re saying it’s only reasoning in that way because we taught it to. Er, yep.
How great this is becomes apparent when you think how virtually impossible it has been to teach this sort of reasoning using symbolic logic. We’ve been failing pathetically for decades. With LLMs you just throw the internet at it and it figures it out for itself.
Personally I’ve been both in awe and also skeptical about these things, and basically still am. They’re not conscious, they’re not yet close to being general AIs, they don’t reason in the same way as humans. It is still fairly easy to trip them up and they’re not passing the Turing test against an informed interrogator any time soon. They do reason though. It’s fairly rudimentary in many ways, but it is really there.
This applies to humans too. It takes many years of intensive education to get us to reason effectively. Solutions that in hindsight are obvious, that children learn in the first years of secondary school, were incredible breakthroughs by geniuses still revered today.