>This is a circa 1908 Wollensak 35mm F5.0 Cine-Velostigmat hand cranked cinema camera lens
Which is not a Canon lens.
In other words, he probably should have read the article.
For many photographers, lenses are the most expensive part of the camera system and it's nice that Nikon has kept their camera bodies backwards compatible with their lenses for 50 years. It is also largely forward compatible (allowing modern Nikon lenses to be used on older Nikon cameras).