I suspect that was the breach that led to his firing.
Like any tool, it depends on how its used. Plenty of examples lately of federal documents and legal briefs quoting non-existent precedences and studies.
Yet, as a writer, I like to have a neutral party examine my work and make suggestions. Using AI for that is reasonable, specially as it avoids the occasional interpersonal conflict when one doesn't agree with the suggestions.
But recall that AI is nothing but a gussied-up spell check. I don't always agree with what spell check tells me, to the point that I have autocorrect turned off on my devices.
The biggest downside to AI is that it will strip the writer's personality from their writing. We'll get a bunch of bland pap...maybe accurate, maybe not.
For example, imagine if the works by Ernest Gann, Richard Bach, or Martin Caiden were "corrected" by AI......
Ron Wanttaja