I think that's a you problem lol! I accept existence as the primary axiom of everything. Even you do, if you were consistent in your Boltzmann brain figuring or your empiricism. The thing still exists. This is basically Descartes' demon. You still know that you exist at that moment that you think of it. I think, therefore I am, at this moment. Further, there is no guarantee that Boltzmann brains are more likely than connected, "real" brains, this is making a lot of sweeping assumptions about reality, which is, in my philosophy, evil, and the assertion the meme makes that you ARE a Boltzmann brain is a further assumption. It is idiotic and deceptive.