Rather than a weird "cult of personality", the fact that Git demonstrated with Linux that it could handle a relatively large amount of source code and allow dozens (hundred?) of programmer to work on it "asynchronously" were key factors for adoption, I believe. If SVN was that good, as it was already well-established online (Github was not the first online VCS frontend, far from it), it should have remained the king of the hill. But it was decapitated instead.