But those guys almost definitely aren’t conscious. There’s a difference between how you reason about absurdly low probabilities and decent probabilities.
(I also think that we shouldn’t a priori rule out that the world might be messy such that we’re constnatly inadvertently harming huge numbers of conscious creatures).
Things with a 50% chance of being very good aren’t pascal’s muggings! Your decision theory can’t be “Pascal’s muggin means I ignore everything with probability less than .5 of being good.”