AnonC doesn't seem to be upset that the journalist was fired. The disappointment comes from Ars trying to brush this entire situation away by deleting articles, comments, and making no statement on their website.
Reminds me of a story I was told as an intern deploying infra changes to prod for the first time. Some guy had accidentally caused hours of downtime, and was expecting to be fired, only for his boss to say "Those hours of downtime is the price we pay to train our staff (you) to be careful. If we fire you, we throw the investment out the window"
I've worked on teams with a rubber stamp review culture where you're seen as a problem if you "slow things down" too much with thorough review. I've also worked on teams that see value in correctness and rigor. I've never worked on a team where a reviewer is putting their job on the line every time they click "Approve". And culturally, I'm not sure I'd want to.
That said I think it's pretty clear we need mechanisms that better hold engineers to account for signing off on things they shouldn't have. In some engineering domains you can lose your license for this kind of thing, and I feel like we need some analogous structure for the profession of software engineering.
Making up quotes for article, with technology or not, should lead to firing.
... and, also, improved processes. There should be no way an individual writer can damage the brand to this extent with absolutely no checks or oversight. This was just an error, but a bad actor could've put something far, far worse out there.
Even an automated quote-checker might have helped in this case.