It's nice to have a frame of reference on how you're doing, like being able to see if you did better than usual or not
Though I guess wanting to improve your performance isn't very popular around here.

For PVE I guess they could only show you your stats only, and compare it to some kind of average? It'd be a start I suppose. Either way let's not pretend we need numbers to tell if someone is bad at the game or not, not that it matters since the TOS was made with paper thin skinned ppl in mind, so you hardly see people being called out.