LLMs already beat and match humans in creating art and deep fakes. It's not that far fetched to see an AI therefore beat humans in other creative endeavors.

It's not a singularity. If you build an AGI identical to a human then predicting the outcome of agi is similar to predicting the outcome of human behavior. This is not division by zero.

Mind you human behavior is unpredictable, but we never describe the outcomes of human behavior as a "singularity". Agi is the same way... It's unpredictable like human behavior but far far away from a "singularity"