On topic but a different bike....
I just had the 20k km check done on my Aprilia RSV4. For those who don't know of this bike it's a V4, 200+ hp sport bike. All valves were in spec but at the tighter end of that spec. They were adjusted to the middle of the specification.
Taken in total, I think this thread is telling us that manufacturing design, tolerances and materials are much better than those of the past.
"They sure don't build them like they used to!"