I thought the quality of the business and social science classes at MIT was very good (didn’t have a chance to take any humanities courses). Many students choose not to major in those fields, not because of the quality of instruction but because a) they lose some of the value of the MIT brand by doing so, or b) if they could get into MIT and want to study history, they could also proabably get into an Ivy to study history.
MIT is also more quantitatively focused than HYPS, in every possible way. It’s not a coincidence that MIT was the first highly selective college to reinstitute standardized testing requirements. If you want to major in Women’s and Gender Studies or English Lit, a school that’s more “holistic” in admissions probably feels like a better fit than one that weights traditional, objective metrics more heavily. Conversely, if you’re already inclined toward a numbers-driven major you probably also tend to gravitate toward a more numbers-driven school (note: I used words such as “more” and “weight” and “heavily” for a reason. No need to point out that all of these colleges claim their admissions is holistic or look at SAT scores).