What you’re describing is a general experience with LLM, not limited to the C-level.

If an LLM sprouts rubbish you detect it because you have external knowledge, in other words, you’re the subject matter expert.

What makes you think that those same errors are not happening at the same rate outside your direct personal sphere of knowledge?

Now consider what this means for the people around you, including the C-level.

Repeat after me, AI is Assumed Intelligence and should not be considered anything more than autocorrect on steroids.