Unornamented in a sentence as an adjective

There is nothing "objective" about writing in a bland, unornamented style, or about treating complex problems as if they were syllogisms.

While Wallace wrote beautifully, PG is writing about writing usefully, even if that writing is bare and unornamented.

Unornamented definitions

adjective

lacking embellishment or ornamentation; "a plain hair style"; "unembellished white walls"; "functional architecture featuring stark unornamented concrete"

See also: plain bare spare unembellished