Well, first let me say I always like to watch videos that show the custom construction of motorcycles. But, now with that said, this bike in the video and the other corporate bikes that they make really look pretty ugly to me.
Over time the choppers became more and more about achieving a certain look, rather than being primarily performance oriented modifications. The modifications that had had their origin in hot-rodding evolved into an artistic and aesthetic direction. By the mid 1970s stock Japanese and European performance motorcycles would outperform most bobbers and choppers. The one exception to this was the drag racing arena, which placed a premium on pure engine power, rather than handling over curvy courses. Chopper styling continued to be influenced by drag-bike modifications throughout the 1960s and 1970s.
While all choppers are highly customized bikes, sometimes even being built from scratch using all custom parts, not all customized bikes are choppers. In Europe at roughly the same era that choppers were invented and popularized in the USA, bikers modified their bikes (primarily English brands like Triumph, BSA, Norton and Matchless) in a different way, to achieve different looks, performance goals and riding position. The resulting bikes are known as café racers, and look very different from a chopper.
As the popularity of choppers grew, in part through exposure in movies such as the 1969 classic Easy Rider, several motorcycle brands took note and began to include chopper influenced styling in their factory offerings. None of the factories were willing to go all out and do things like abandon rear-suspension to achieve the classic chopper look, however. As a result, these bikes were given the name “factory customs” and are not considered choppers.
