Zero repercussions for the senior editor involved in fabricating quotations (they neglect to even name the culprit), so this is essentially an open confession that Ars has zero (really, negative) journalistic integrity and will continue to blatantly fabricate articles rather than even pretending to do journalism, so long as they don't get caught. To get to the stage where an editor who has been at the company for 14 years is allowed to publish fraudulent LLM output, which is both plagiarism (claiming the output as his own), and engaging in the spread of disinformation by fabricating stories wholesale, indicates a deep cultural rot within the organisation that should warrant a response deeper than "oopsie". The publication of that article was not an accident.

What is the evidence that lead you to believe there have been no repercussions? In what world do they retract the article without at a minimum giving a stern warning to the people involved?

If they had named the people involved, the criticism would be, "they aren't taking responsibility, they're passing the buck to these employees."