Credibility is the asset
A project manager usually has no authority over the people they depend on. What they have instead is credibility: when they say a date is at risk, people believe them and act.
That asset is unusually vulnerable to the failure mode generated content produces. A status report containing a confidently wrong figure, a summary attributing a position to someone who did not hold it, or a risk assessment that is fluent and unconsidered, all damage the thing the role runs on. And they damage it disproportionately, because the artefacts are the visible output and people generalise from them.
The specific danger is that generated artefacts are polished. A hurried human report looks hurried, which correctly signals how much confidence to place in it. A generated one looks considered whether or not anyone considered it, so the signal that used to convey effort and attention is gone.
Two consequences follow.
The review standard has to be higher rather than lower for generated artefacts, which is the opposite of the pressure. Anything going to a stakeholder should be read by the person whose name is on it, specifically checking claims and attributions.
And the first visible error costs more than the time saved. A stakeholder who finds a fabricated figure in a status report will discount every subsequent report, and recovering that is far harder than earning it was.
The trust cliff from the company brain cursus applies here in a particularly sharp form, because the audience is small and remembers.

