In fairness, I think anything called "brutalist ______" will be more of an analogy than anything. The core of brutalist architecture materials. Brut means concrete. A lot of the abstract/philosphical concepts relate mostly to the material. Brutalism aften aims to be "true" to the concrete. Don't make it look like bricks or wood. Take advantage of its unique abilities to produce different shapes.

You can mimick the look of brutalist architecture and make things look like concrete. But then, you're going explicitely against the "philosphy" by default: don't pretend you're not using concrete.

You can mimic/adopt the philosophy, but then it will not look like brutalism.