I mean the probability isn't in our favor. As for us, yeah it doesn't change much. Same for a lot of epistemological arguments. Last Thursdayism, Descartes demon, Plato's cave, Chung Tzu's butterfly, solipsism, Boltzmann brains could all be bang on right on the money. I see you're taking the more so physical reality approach, even then if something like the holographic universe or some variation is correct then maybe distance doesn't exist like we think it does. If for instance we're in a black hole then there's a one to one representation of all information here in what we consider 3D space on the black hole's surface.

All the fun ideas aside I agree with you although maybe our definitions of fun may be different. That is I think the first goal is to reduce needless and avoidable suffering for all minds anywhere in existence whenever possible. Like even if it is a simulation of sorts or reality just started ten seconds ago or what I'm experiencing is a Boltzmann brain it still doesn't stop the first goal from at least being the best goal I've found so far.