Agreed. But I don't know that I would associate it with Fe; my boss is an ENFP and he brings up his readings of others. He's much worse though. He pretends he's not reading me and then when we are in the middle of a tense discussion or disagreement, he brings up fundamental flaws in my nature, albeit in a seemingly sympathetic way. Its really a manipulative attempt to weaken me and make me compliant, and it friggin works every time.
Oh, I'm sure there are times when it is appropriate to say something. However, it seems there are many people who are good at reading others, yet there are few that understand the important of discretion in using this skill. If its a touchy subject and the person involved, very private, it is usually best to not address the matter directly unless they bring it up. If I suspect a friend of mine is depressed I don't say "you seem depressed", instead I will attempt to spend time with them and make an extra effort to lend a sympathetic ear. On the other hand, my ISFJ Mum does this really great thing when she's at the supermarket and sees a stressed and embarrassed young mother with a screaming child. She jokes with the woman about how her kids were the same at that age or something to that effect, in order to deflect the tension, to make the woman feel less judged by others and to emphasize that she's not alone.
I also think some people convince themselves that it they are well intentioned but really they are using it to their own advantage, as it was with HiddenAutumn's boss (and mine). Others are more interested in pointing out the fact that they can read someone in order to boast about their skill than using it to help others. As nolla said, perhaps it has less to do with whether you can read someone and more to do with what you do with that knowledge.