Nonsense.
An amoeba can adapt to its surroundings but i don't see it being 'creative'.
My computer can draw graphics autonomously (without me telling it what to do) and yet it never showed any creativity (unless you mean the artifacts from overheating

)
Indeed creativity is not
necessary for autonomy. My bad. Yet it is
usefull. And humans use it, so if machines are to do as good a job as humans, they might need to use it too.
No, you were probably correct in the first place. The amoeba was amazingly creative in that it did things that up until that point had never been done. Not creative by our elite human standards.