it’s impossible to know whether misconceptions or gaps are because the author doesn’t understand the material deeply enough or the author does but the AI doesn’t and the author’s not proofreading carefully enough
It doesn’t matter. The human responsible for the written piece is … responsible for the written piece. If someone is willing to use AI to supplement their own intellect and/or writing abilities, then they need to take ownership of the mistakes, misconceptions, etc., that come along with that, the same as an author who does all the work themselves. The problem you’ve identified here is that the human responsible for the writing is not fully taking responsibility for the writing.