In a well-run humanities degree you would never pass the first year without being able to critically engage with difficult ideas, although I would have no trouble believing there are institutions that offer poorly-run ones.
I'll also raise the point a lot more people simply don't care or don't believe these things to be unethical than I think a lot of people are willing to admit.
Discussing the different sides of difficult ideas in a classroom setting is not critical thinking. The ideas don’t even need to be “difficult” to practice critical thinking on.
Humanities does focus a lot on teaching students the current critical views of lots of things in society. But they focus far too much on the substance of the critiques rather than the process of generating and meaningfully evaluating them.
Philosophy's basic main tenet is to critically engage with ideas. ONE aspect of that is to engage ideas in the politic sense
Having taken the time to pursue some amount of humanities education next to an engineering degree, this isn't even close to true. If anything, humanities education is a celebration of all the things that it can mean to be human. That certain ideas are currently broadly in vogue in society (in this case I guess for the vocal minority you could say it is "nice at all costs" and "being nice should be criminal" with very little in between) is immaterial to what's happening in such a classroom.
it is necessary but not sufficient.
Did Einstein make relativity or Nietzsche "Thus Spake Zarathustra " in a vacuum?
Guess what? That company does not exist today.