Well, no negative responses - so I take that as an opportunity to add a couple of facts to ponder. They don't prove anything, but could stimulate thinking.

I went to the season opening at our velodrome last night. My buddy took 3rd in the Pro/1/2. There were close to 30 riders at the start. My non-scientific method couldn't find 3 threadless headsets, or aheadset stems.

Integrated headsets aren't new and date back to the early part of the 1900's.
Aheadset style stems are new and date back at least the 1930's. Threadless headsets too.
V-brakes aren't new and date back to at least the mid-1930's.

In fact, there's not much new apart from tig welding and carbon fiber material since before the second world war.