Could you explain?

Also, do you not think that current implementations that use eye tracking are not real holograms?

What's to say that holograms similar to those of Star Wars could not be produced by inspecting the environment and automatically determining where people's head and eyes are, e.g. via a combination of technologies similar to the following:

Eye-tracking holographic table requiring 3D glasses: http://www.euclideonholographics.com/

3D TV not requiring special glasses for the 3D effect: http://www.ultra-d.com/

And what about things that have been called and accepted as holographs created since the mid-20th century?

https://en.wikipedia.org/wiki/Holography