Should I explain to the client why the photos look bad?

Hi.
So I am a low-tier event photography that does a lot of work for university society events. I am editing through a shoot that was from a performance showcase type event. The thing is that the venue that they held the showcase in (a random church) had really bad lighting which forced me to bump my ISO wayyyyy up and hope I can fix in post. Well now that it has come to editing and I have applied heavy denoise and fixed exposure, everyone's faces looks so incredibly wrong. It is fine for the most part but if anyone zooms in even the slightest bit they will be able to tell something is off.

My question is, when I deliver the photos should I immediately acknowledge how weird they look and explain why or am I better just waiting to see if they ask about it? I don't want them to secretly think I am simply a bad photographer/editor without me knowing.

Any input is much appreciated