BTW, it's important to note that by some polls an actual majority of theoretical physicists now believe in MWI, and this was true well before I wrote anything. My only contributions are in explaining the state of the issue to nonphysicists (I am a good explainer), formalizing the gross probability-theoretic errors of some critiques of MWI (I am a domain expert at that part), and stripping off a lot of soft understatement that many physicists have to do for fear of offending sillier colleagues (i.e., they know how incredibly stupid the Copenhagen interpretation appears nowadays, but will incur professional costs from saying it out loud with corresponding force, because there are many senior physicists who grew up believing it).

The idea that Eliezer Yudkowsky made up the MWI as his personal crackpot interpretation isn't just a straw version of LW, it's disrespectful to Everett, DeWitt, and the other inventors of MWI. It does seem to be a common straw version of LW for all that, presumably because it's spontaneously reinvented any time somebody hears that MWI is popular on LW and they have no idea that MWI is also believed by a plurality and possibly a majority of theoretical physicists and that the Quantum Physics Sequence is just trying to explain why to nonphysicists / formalize the arguments in probability-theoretic terms to show their nonambiguity.