I used to work in the sewing industry and this robot is impressive.
The Japanese have had sewing robots but they are not real useful. The biggest problem has been the softness of the fabric which makes it very difficult to handle. They appear to have solved the stiffness problem.
The movie is shot in slow motion. All of the sewing machines I worked around ran at 18 to 25,000 rpm and this one is probably running in that range.
The most that humans will do is to supply the robot. This is the future of the sewing industry.
Yeah? Try getting your robot to replace a broken needle! There are a dozen things that can go wrong in sewing, like the thread breaking, the needle jamming stuck or getting bent, and material bunching up. Robots will have to get much more intelligent to fix problems with sewing machines. In the meantime, humans are necessary.