Again you’re confused, it’s the same difficulty people have with the word ‘fruit’ because in botany we use it very specifically but colloquially it means a sweet tasting enable bit of a plant regardless of what role it plays in reproduction. Colloquially you’d be correct to say that corn grain is not fruit but scientifically you’d be very wrong. Ever eaten an Almond and said ‘what a tasty fruit?’ probably not unless your a droll biology teacher making a point to your class.
Likewise in biology no one expects a slug or worms or similar to analyze and solve problems but if you look up scientific papers about slug intelligence you’ll find plenty, though a lot will also be about simulating their intelligence using various coding methods because that’s a popular phd thesis recently - computer science and biology merge in such interesting ways.
The term AI is a scientific term used in computer science and derives its terminology from definitions used in the science of biology.
What you’re thinking of is when your mate down the pub says ‘yeah he’s really intelligent, went to Yale and stuff’
They are different languages, the words mean different things and yes that’s confusing when terms normally only used in textbooks and academic papers get used by your mates in the pub but you can probably understand that almonds are fruit, peanuts are legumes but both will likely be found in a bag of mixed nuts - and there probably won’t be a strawberry in with them unless it was mixed by the pedantic biology teacher we met before…
Language is complex, AI is a scientific term not your friend at the bar telling you about his kid that’s getting good grades.