Modernism is a huge umbrella term for dozens of styles from about 1920-1985, calling something brutalist "related to modernism" is meaningless. While we're on the subject, I'd like to call attention to Trump's recent decision to mandate neoclassical architecture for all federal government projects, pandering to his base's fascist streak and ending a decades-long tradition of building federal offices, as a matter of policy, in the style of their own time.
https://frieze.com/article/what-trum...n-really-means