Good thread.
The reason Nanite, or Control's hard surfaces / ray tracing, is important is NOT that it looks pretty. That's mostly an accident.
What it does is lets AAA make stuff that looks about the same, but without baking tons of intermediate assets / making environments incredibly static.
Players discuss this most often when it comes to rendering?
Like - the point of Nanite/Lumen IS NOT gigashit graphics for players. It's to smooth over a million iteration-blocking workflow issues... at a known runtime performance cost.