the writer has probably borrowed a distinction made in relationship discourse between pointing out a fact (you left grease stains on the table) and being judgmental (you should pay attention to what you’re doing), feedback being a reiteration of what one has done. e.g. “you just threw the cat off the balcony” as opposed to “what have you done idiot”

this distinction has little bearing on the situation you’ve described regarding where, etc.
whether you say it one way or the other, you’re talking about facts. should we leave it to the students to draw their own conclusions?
that’s a bit far-fetched in a classroom situation.

i would stick to your gut feeling
and leave the advice/feedback to situations such as
you seem to be feeling down today
as opposed to
cheer up life is short and there are people who are REALLY suffering
people who go around tooting the latter deserve to be told the same when THEY’RE suffering.