Alternatively, things that are not insightful can feel insightful to some people, because they triggered some different, tangentially related thoughts than what

Alternatively, things that are not insightful can feel insightful to some people, because they triggered some different, tangentially related thoughts than what was being communicated — i.e., the reader substituted their own insight for the author's. Or because the author has enough authority that they are granted a presumption of insightfulness by default, even (or perhaps especially) when the concrete insight that's allegedly being communicated remains unclear.