askchapo

I can only speak to the case I was personally in contact with but I think it brings up possibly useful elements to consider.

He liked specific personalities within the church broadly who validated his anti semitic theories about what was wrong with the country. I think the fact they are less centralized makes it harder to castigate people like this in a durable and comprehensive way so figures can thrive in the margins and cultivate followings remotely.

He liked that the congregations are often ethnically separated. It validated his beliefs about the way society ought to work ("See, this old tradition understands that a strong community is monoethnic!"). It also gives an easy excuse to not engage in the community or attend services and thus have to give money or time ("I'm Saxon by descent, you can't really expect me to go to church with a bunch of Slavs").

Basically it was a convenient version of Christendom for him to hang his ethnic and misogynistic impulses on without having to seriously engage with anyone. I think you see a similar kind of chud drawn to Pentecostal denominations, they just have different hang ups (don't think of themselves as racist or patriarchal consciously) because you can also just lump your own shit on that version and nobody can stop you.