Totally agree about not providing ammo and my personal philosophy is if you, pardon my french, didn’t have the balls to say it in-person, you should not put it in writing on 360 review (or whatever MBA name they use for this in your org). Especially when it comes to peers or folks below you (doing that to higher ups is just not smart to begin with).

It’s kind of a delicate dance though because they try to twist your arm with a “what can they improve?” section