Benj Edwards, one of the authors, accepted responsibility in a bluesky post[0]. He lists some extenuating circumstances[1], but takes full responsibility. Time will tell if it's a one-off thing or not I guess.
[0] https://bsky.app/profile/benjedwards.com/post/3mewgow6ch22p
[1] your mileage may vary on how much you believe it and how much slack you want to cut him if you do
It's not really important whether it's a one-off thing with this one guy, he's not relevant in the big picture. To the extent that he deindividualizes his labor he's just one more fungible operator of AI anyway.
People are making a bigger deal about it than this one article or site warrants because of ongoing discourse about whether LLM tech will regularly and inevitably lead to these mistakes. We're all starting to get sick of hearing about it, but this keeps happening.
The bigger problem is that he felt the need to work while ill in bed, with very little sleep and sick with fever.
Makes me wonder about Ars Technica's company culture.