By ‘real walls’, I’m guessing you mean cinderblock, cement tilt-up, etc… hehe, yes I agree it would be a lot more involved getting wires up those kind of walls.
On a side note, I think real/fake walls is a misnomer. Hear me out (hope I don’t sound triggered here):
If you think about it, ‘columns’ are perhaps our most ancient structural technology; these methods were used as far back as the great pyramids, and even earlier. OTOH ‘hollow shells’ are a much more modern technology; modern aircraft, rockets, and F1 racers are great examples of this (aka ‘monocoque structures’).
When we factor in how much easier it is to add wires to a stick wall as well, it becomes even more clear that stick framing is much more modern/high tech vs brick/block/cement walls.
So to me that characterization of real/fake walls is in a way backwards from what it should be. It seems like the more pejorative term should be attached to the inferior technology. So then, US stick framed homes would be ‘real’, and block walls ‘fake’. That still doesn’t sound accurate at all to me. When we compare the structures of a jet airliner to the pyramids, the terms legacy/modern seem more accurate.
So if you will, it makes sense to refer to stick walls as ‘modern’ and columnar walls as ‘legacy’.