I don't think that's right either (it sounds like a description of adaptation), and I don't think your description of LLMs is fair, even though I'm fairly sure they're not AGI and won't scale to AGI.
Intelligence is more like the ability to generalize skills, applying knowledge gained in one scenario to another scenario.
the ability to apply knowledge to manipulate one's environment or to think abstractly as measured by objective criteria (such as tests)
Manipulating the environment afaik is to increase your chances of survival.
Hmm.. you are talking about LLMs.. They are the most generic thing we have right now (Jan 2024) LLMs have limitations, like learning on the fly isn't their strong side. But the same with brain, it consists of limited components, that's only together they work well. LLMs can be a part of the solution, if we can't find something better.