In what ways are these "brutalist"? The first two I clicked on had (in one) music auto-playing over a video with your mouse pointer a Terminator-style claw and (in the other) a 3D animated leg that you could spin before hitting 'access' to get to the actual site. These aren't brutalist, they're the trying-too-hard-to-be-cool teenager phase.
[1] http://gregroque.com/#/home [2] https://heel.zone