It can create things you do not know or recognise. But that is trivial.
The reasons is, that there is a random seed and it combines things by chance. But that's not a new style. If you get something random you want to recreate as a style, those ai image generators are notoriously bad with consistency.
But they are creepily good at imitating a known style that is in their training data.
And ai artworks do not look bad as such. But they do look uninteresting. Often bland or creepy. They quickly devolve into the uncanny valley.