I so far hadn't seen anything that would be useful enough to make me not disdainfull of humanities, but i would be happy to be proven wrong.
More practically, the humanities teaches persuasion and rhetoric, in writing and in speaking, as well as reading between the lines when reading or listening. I work with engineers...kind of am one myself, though I was trained as a humanist...and I see them dashing themselves on those rocks on a weekly basis.
We've applied the title "engineer" to many, many people who haven't been through a formal engineering program, accredited or not.
* My undergrad is one of those 21 but I went through as EE, not SE.
Most modern legal frameworks already incorporate the better structured part of the humanities (philosophy & ethics).
However, none of this matters when we live in a hierarchical society where most people just do not exist in a bubble where they can dissent on any and all things they're working on without fear of reprisal. The fact that Google employees were able to speak-up about bidding on government contracts is huge, but that's a luxury most workers don't have.
This isn't true, as anyone with an undergrad engineering degree will tell you!