If you think all possible worlds exist, then you should expect our small bubble of ordered existence to erupt into chaos any day now, because way more copies of it are contained in chaotic worlds than in ordered ones. Every day you spend without spontaneously turning into a pheasant should weaken your faith in the multiverse.

It's not clear to me that this is correct. Also, even if it is, then coherent memories (like what we're using to judge this whole scenario) only exist in worlds where this either hasn't happened yet or won't ever.