Uh, when I go to that page I don't see the word "union" anywhere on it. I tried searching for "union" on it and didn't get anything either. Where's the union part?
I am truly confused. How did you get the impression they have anything to do with being a union? I don't see the union part, or the members part, or the collective bargaining part; seems to me a union ought to have those components.
That's a front for a network of white nationalist organizations, not an actual union.
I don't know what makes something 'officially' a labor union but at least they call themselves that. There was also Washington state Tech Workers Union.