People move about in the physical world (spatial intelligence), do not require a training phase but learn from day 1, have emotions (emotional intelligence), have self-awareness, are able to express creativity, and in fact are complex in ways we still haven't understood through the scientific lens.

As I am wondering why I have to explain how human intelligence work to presumably another human, there is much more to intelligence, and thus AGI, than an IQ test or being able to think hard about Fermat's last theorem after having been fed the entirety of human knowledge and a few GWh of power.

There is a term already to define intelligence which isn't as general and flexible as a human: https://en.wikipedia.org/wiki/Weak_artificial_intelligence