I find transhumanism to be a fascinating idea, but unfortunately at the moment it's just that.
In the future, however? I think transhumanism is inevitable. The benefits of transhumanism are such that humanity just won't be able to say no to them. However, I doubt that a lot of the things in that video will happen. For example, I'm not sure people will be so willing to mess with their brains.
The idea of living forever sounds like the worst thing imaginable.
Why? If you and everyone you know could live forever together, never aging, what would be so terrible about that? Even if you eventually decided you wanted to end your life, suicide isn't ruled out. Dying from old age is just removed from the equation.