Where are you seeing "an aesthetic from a bygone era" in the linked page? Are you really grokking what's going on with the content, or ? Undergirding the brutalist claim is its quine-ness. Like buildings in the brutalist tradition that "showcase the bare building materials and structural elements"[1], the content of the page reveals its structure. In fact, no part comprising its structure or building materials (such as they are) is left unexposed. It displays everything that is essential and displays nothing that is inessential.

It would be one thing to say that this sort of thing—i.e., taking it to its (brutal) extreme—is overkill and that that's what you find unappealing about it. To call it "the opposite of brutalism", on the other hand, is silly.

1. https://en.wikipedia.org/w/index.php?title=Brutalist_archite...