Someone is writing it. There are a lot more than 10 people that want to be in the top 10. It's hard to get into the top 10. You might not appreciate it as art, but the songs that are there are good at something. You could call it being catchy. AI is not even close on this metric.
I think it will get there, wherever "there" is. I think it's very impressive now, as a technical marvel. But it's really not competing with the best humans yet. I don't say this to dismiss it. I say this as an appreciator of music who is neutral on AI. Probably one day I'll listen to mostly AI generated music. But it won't be this month.