And I had/have quite mixed feelings about this. On the one hand, I felt that this person was generally trying to be helpful and improve the situation around them. And feedback/advice can certainly serve that end. Who doesn't want to know how to improve their overall performance, right?
But on the other, to the extent that the power dynamic above was actually in play, unsolicited feedback of this sort only rubbed people the wrong way. Perhaps I was reading too much into it, but thinking back to certain times in my past where I've been the advice giver, I do think there are occasions where my motivations were suspect, where, at the time I thought I was genuinely trying to help someone, but which in retrospect were mostly superiority displays.
I don't have any concrete conclusions to draw from this; just something the article stirred up. I welcome your feedback. ;)