He was only slandered once, by the LLM Agent. The Ars Technica article had presented paraphrases that it falsely attributed as direct quotes, and was therefore

He was only slandered once, by the LLM Agent. The Ars Technica article had presented paraphrases that it falsely attributed as direct quotes, and was therefore factually incorrect reporting. But it was not defamatory by any reasonable standard. Slander isn't just a synonym of "lie".