Voyager EMH
Slipper Wearing Plucker of Pheasants
No you don't. You could have another board that shows index range and strokes received for individual strokeplay without any reference to course handicap.That's not the point though is it.
People were saying that the Course Handicap is "irrelevant".
It's not irrelevant at all because you need to use it to arrive at your Playing Handicap.
Bearing in mind that it's a new system and people are still learning how it works, saying the CH is irrelevant is not true and a misleading choice of wording. Yes, once you have your PH and you're just playing a match, you "no longer use" your CH, but you needed it to get to the PH in the first place.