Today, we have see-through display screens, screens that roll up, and "holographic" stage performers. And we have plenty of incentives for clever engineers to combine all of the above, shrink them down, make them cheap, find extra little tricks, and file off all the edges to the point they're as unnoticeable as a cell phone's telephone-wires. If a display looks like a hologram, acts like a hologram, and quacks like a hologram, and we're willing to call several species of lizards "dragons", then why would we call that display anything else?