The Neo-Oceanian System is an ideology that was developed when Big Brother Himmler thought the idea that people who didn't look like him existed disgusted him. He went away with the traditional teachings of the Oceanian System, saying it didn't go far enough in establishing Aryan supremacy. This new belief He espoused wanted to eugenically make everybody look like Him. Of course, this would mean that every single woman alive would have to be purged and artificial wombs had to be used to reproduce instead, since they aren't the sex that Himmler was born into, so they could never truly become Him. It is exactly the same as the regular Oceanian System, although with those new beliefs in mind.
However, with new beliefs come new threats to the new beliefs. Germans who don't consent in making themselves look like Himmler are purged. Women are purged. Babies that couldn't be genetically modified to look like Himmler are purged. Anybody who merely questions or casts doubt on these ideas are purged. Praise be to the new divine system that our God has created!