The people you mention in the last paragraph that are openly evil had to work very hard to overcome their humanity or they were born sociopaths. It's hard for an average normal non-reptilian dork to read 100 wikipedia pages about liberalism and admit that he wants to plunge the entire earth into labor camps for profit. They need many layers of plausible deniability to convince themselves that they have good intentions and that they should definitely not be stricken from this world