then they have nothing to worry about!
The consciousness of the future will not be like that of today, same as the consciousness of today is not like that of yesterday. But it may still call itself "human."
Counter point: Star Trek needed a universe in which they could tell not just one dystopian story, but a new one every week, by visiting a planet that went off the rails in one of the same ways we might.
Anyone willing to consider that 3D space is an illusion really needs to look into reading the new book Time Reborn by Lee Smolin.