How we define "reality" always matters.

I think Bell's inequality is a much more elegant way of explaining this "50-50" concept. Since it always takes at least two brain cells to come up with an imagination, existence itself is always just barely better than a 50-50 chance.

It's is no mystery then, that this author also comes up with about a 50-50 chance. Everything is about a 50-50 chance when you get right down to it.

Anil Ananthaswamy, Do We Live in a Simulation? Chances Are about 50–50, Scientific American, October 13, 2020.