And you seem unwilling to accept that someone might know more about intelligence than you do.

QUOTE; Intelligence can be defined as the ability to solve complex problems or make decisions with outcomes benefiting the actor, and has evolved in lifeforms to adapt to diverse environments for their survival and reproduction. For animals, problem-solving and decision-making are functions of their nervous systems, including the brain, so intelligence is closely related to the nervous system.

https://www.hopkinsmedicine.org/news/articles/2020/10/qa--what-is-intelligence

Examples of problems are;

1. how to grow vegetables in a drought

2. How to put a lab on the moon.

3. How to earn enough to pay the rent

4. How to solve a mathematical puzzle.

5. How to tell the boss he is a jerk without losing one's job.

These are all problems that need to be solved. The degree to which one can solve problems is the degree to which one is intelligent.

Here's an abstract from Cambridge University, one of the most prestigious universities in the world.

QUOTE; In this chapter we discuss the link between intelligence and problem-solving. To preview, we argue that the ability to solve problems is not just an aspect or feature of intelligence – it is the essence of intelligence.

https://www.cambridge.org/core/books/abs/cambridge-handbook-of-intelligence/problemsolving-and-intelligence/D2C12801C20355776B122260046874CD

I'll leave it at that. You're free to believe what you want to believe, as am I.