As it happens, designing Future Interfaces For The Future used to be my line of work. I had the opportunity to design with real working prototypes, not green screens and After Effects, so there certainly are some interactions in the video which I'm a little skeptical of, given that I've actually tried them and the animators presumably haven't. But that's not my problem with the video.
My problem is the opposite, really — this vision, from an interaction perspective, is not visionary. It's a timid increment from the status quo, and the status quo, from an interaction perspective, is actually rather terrible.
This matters, because visions matter. Visions give people a direction and inspire people to act, and a group of inspired people is the most powerful force in the world. If you're a young person setting off to realize a vision, or an old person setting off to fund one, I really want it to be something worthwhile. Something that genuinely improves how we interact.