When an article is retracted it's standard to at least mention the title and what specific information was incorrect so that anyone who may have read, cited or linked it is informed what information was inaccurate. That's actually the point of a retraction and without it this non-standard retraction has no utility except being a fig leaf for Ars to prevent external reporting becoming a bigger story. In the comments I…
It's good to issue a correction, and in this case to retract the article. But it doesn't really give me confidence going forward, especially where this was flagged because the misquoted person raised the issue. It's not like Ars' own processes somehow unearthed this error.
It makes me think I should get in the habit of reading week-old Ars articles, whose errors would likely have been caught by early readers.