Is peer evaluation necessary to be told to a person since it's called confidential?

Just receive an annoying call from my lazy groupmate.
Very obvious that he did not really commit in the assignment and he was also not that proactive like others in my group.
I gave him that point was just according to his "workload".
I think I am right to do that..
But, my damn tutor, who is also another annoying person( who told us to go to the tutorial at 815am but she came in late at 845am!), called him or sent him an email regarding to the low peer evaluation points for him.
And I thought this was supposed to be confidential??

Just asking you guys, whether this kind of evaluation is relevant enough and then is it confidential among the tutors and the students themselves??

That tutor bullshitted!!