There is only one set of ideas that truly experiences freedom of thought and inquiry in the humanities in Western universities, and that’s the progressive far left worldview. This cultural bias skews the humanities far more than it does STEM. You can see it institutionalized in the *-studies majors (e.g. ethnic studies), which have relatively little academic rigor. And because the humanities are so often skewed, I disagree with the notion that it makes students well rounded.
Without room for conflicting views, critical inquiry, and freedom of thought, the humanities seem to have devolved into a propaganda machine that teaches just this worldview. It is a ubiquitous enough problem that entire news outlets have been created to track the disturbing saga of college monoculture in America: https://www.thecollegefix.com/