Part of me wants to point out that these white nationalists will find a lot of allies in their stance against big tech firms in the open source and free software movements. I'm loath to do it though because we already have enough gatekeeping misogynists' and racists hiding behind the phrase "meritocracy." If we need more of them to grow then I think I should find a different group of software advocates.
Then again... seeing the value of what can be built by a community that wants to be judged by what we build, not who we are, might help with some of their lack of faith in their fellow humans. The core "conservative" argument against socialism and communism are undermined by the very existence of the open source and free software ecosystems.
We come here in search of a place to express our thoughts outside of the direct control and surveillance of unaccountable, mega-corporations. There is no common theme that binds us other than these being the bonds we've chosen rather than those that have been chosen for us.