This HN headline is editorialized, the Bloomberg headline is "Ford AI Hiccups Push Carmaker to Rehire ‘Gray Beard’ Inspectors".

The editorialized headline is also misleading: "Ford rehires 350 engineers after AI fails to preserve expertise or train juniors" - there is nothing in the original story that suggests Ford were expecting AI to "train juniors".

And since the Bloomberg headline is behind a paywall the editorialized headline is most of what we have to go on.

This Verge story would be a better link: "Ford had to hire back former engineers to fix mistakes made by its automated systems" https://www.theverge.com/transportation/956316/ford-quality-...

And the crucial detail: nothing indicates Ford laid off the 350 people who were re-hired. It looks to me like it could be bringing back people who retired.