I will try another analogy. What if we have a parrot with exceptional memory, which can not only repeat things it heard some time ago, but to continue words it hearing now. I come to the cage and say: "Cogito?" and parrot continue "Ergo sum!". Is parrot intelligent and able to reason, even if I do not know about Descartes?
AI can reason, it might not be the greatest especially at numbers and where there's data contamination but it can do it.
There's something called abductive reasoning, a gift and a curse at the same time.