There is no problem with a couple of AI images to help enhance your human produced post or even to improve your language a bit.
The issue is if most of the content is AI produced.
So you can have some AI on the side, but its not healthy on Hive or in real life to make it the main meal.
In the challenge post (and in the community where this post is published), the rules specifically state:
And we certainly would have missed a great epilogue /"Side Note" if she had used an AI image!