When you are in a movie theater, and you and everyone else is looking at the movie screen, nobody is arguing whether the screen is real. Of course it’s real, because everybody in the theater can see it.
If only one person could see the screen, there could be an argument that it is an hallucination. But if all the people in a room see something, then there is an unspoken consensus that it is real.
We are about to undergo a similar semantic transition as extended reality becomes universally adopted.
If I am the only person wearing a pair of XR glasses, then it could be said that I am experiencing a technology-induced hallucination. And if even only two people out of a crowd can see the same thing, it could still be argued that we are both sharing a common hallucination.
But what if everybody in the room is wearing XR specs and therefore sees and hears the same thing? Then that thing is part of reality, just like the screen in that movie theater.
What is real, in human terms, is whatever we all experience together.