Legal case determines lawyer LLM conversations don't fall under attorney client privilege - In other news, water is wet

This appears to be a couple of weeks old, but I just found out about this. A court decision from the past couple of weeks is saying that any conversation or work product that a lawyer created with Claude specifically can no longer be considered attorney client privilege regarding any material or any Client information. At that point it is considered public. I am confused why this needed to be a court decision.