@halcek I get what you're saying and would agree if white supremacists were particularly known for holding worldviews that were internally consistent.
From the outside I can only tell that they speak Japanese, not that they are Japanese. I've stumbled across some pretty weird (and extremely racist) subcultures online, so at this point I just prefer to ask before involving myself in a community.
For a particularly bizarre example see this article: https://www.theatlantic.com/technology/archive/2020/06/my-little-pony-nazi-4chan-black-lives-matter/613348/