Um, Big Apple, "Brutalism" doesn't derive from the English word
brutal--or anything in English at all, really.
It comes from the French
béton brut, which means "rough-hewn concrete". So what is implied in Brutalism (other than the concrete) is a sense of roughness, unfinishedness.
It is not a catchall term for any ugly*
Modernist folly**
. It is a
specific style with
specific features (those features being what Nowhereman and I are debating about).
________________________
*All aesthetics being relative.
**That is, a one-of-a-kind design--see definition (4)
here.