The pre-Socratic Greek philosopher Parmenides taught that the only things that are real are things which never change… and the pre-Socratic Greek philosopher Heraclitus taught that everything changes. If you superimpose their two views, you get this result: Nothing is real. There is a fascinating next step to this line of thinking: Parmenides could never have existed because he grew old and died and disappeared, so, according to his own philosophy, he did not exist. And Heraclitus may have been right—let’s not forget that; so if Heraclitus was right, then Parmenides did exist, and therefore, according to Heraclitus’ philosophy, perhaps Parmenides was right, since Parmenides fulfilled the conditions, the criteria, by which Heraclitus judged things real. I offer this merely to show that as soon as you begin to ask what is ultimately real, you right away begin talk nonsense.
Fake realities will create fake humans. Or, fake humans will generate fake realities and then sell them to other humans, turning them, eventually, into forgeries of themselves. So we wind up with fake humans inventing fake realities and then peddling them to other fake humans. It is just a very large version of Disneyland.