I know we're just talking about silly word definitions and etymology here, but just from my personal understanding, your site represents what I think neobrutalism "looks like" a lot better than the previous examples which are branded as neobrutalist. This is just my perspective of course.

Edit: I just saw another person say this, and it described the style of the sample sites so much better than "neobrutalism" that I just had to add this, these samples look so much more like Bauhaus!