Nikon is an old optical product company, but it did not originally manufacture cameras. One of the high-quality Nikkor lenses it manufactured was provided to the Canon factory (at that time Canon only made the camera body, Didn’t make lenses, time before 1945) Later, Canon thought that Nikon lenses were expensive, so they developed their own lenses.
It was only after 1948 that Nikon began to imitate the German CONTAX rangefinder camera, called NIKON 1.
Nikon makes the lens first and then the camera, while Canon makes the camera (body) first and then the lens.
So the technicians who were engaged in photography in the 1960s and 1970s always believed that Germany had the best lenses, followed by NIKON, and Canon’s lenses were even lower.