In a quote in the article, one of the judges even points this out to him rather harshly.

“So, Counsel, do you watch the news? Do you listen to the radio? Do you read anything about what's going on in the world?” one of the judges asked Aarons. “Because the problem with lawyers relying on AI hallucinations is an above-the-fold story every single day.”

....

“So, either you buried your head in the sand. And that's a choice to do that. An intentional choice to be uninformed,” the judge continued to Aarons. “Or, you took a gamble. And neither of those are consistent with the code of conduct. So I'm really struggling with your response, saying, ‘Well, I didn't understand. I didn't know about hallucinations.’ My 13-year-old nephew knows about hallucinations. My 75-year-old stepmother knows about hallucinations. So, either you made a decision not to be aware of what's happening in the world in using this tool appropriately, which is a willful choice. Or you decided to roll the dice.”

The article also provides links to five other cases where lawyers used an LLM and filed AI hallucinations as fact. This bozo is clearly in the find out phase.