As a student who has participated in some decisions regarding changing courses at my institution, I think classes here are usually bad because no one really cares. It requires tact to say "this course is garbage and you don't care about it anyway; let me handle it" without bruising egos.
But I think it's bullshit to say that not bruising egos is an important skill, especially in science. The kinds of scientists whose egos are easily bruised are the kinds of scientists who Max Planck was talking about when he said "science progresses one funeral at a time." People who refuse to acknowledge constructive criticism unless it's sugar-coated will continue to pursue the same ideas even after others have proved them wrong.
This is a systematic issue. Science is full of people with big egos. When scientist A criticizes scientist B's idea, ideally scientist A would think really hard about scientist B's criticism and either say "yes, you're right" or "no, here's what you're missing" (ideally with experiments). Scientists with big egos don't do this. They reject other scientists' criticism out of hand, and they criticize people based on feelings rather than ideas. The problem is contagious: Scientists with big egos attract more scientists with big egos, since those are the people who continue to believe they are great despite the barrage of nonsensical criticism. And egos tend to grow larger, not smaller, as people rise in rank.
Appropriately weighing others' evaluations of your ideas is really hard. It requires the technical skill necessary to come up with those ideas in the first place; the social skill to distinguish between sycophantic praise and true positive evaluation; and the emotional control to ignore anger or disappointment that might result from negative evaluation and focus on the content instead. In my experience, people who can do these things make much better scientists, and are much better to work with. They are less guarded when brainstorming ideas and more willing to change their minds in the face of superior evidence. But in modern science, there are relatively few incentives that favor accurate self-evaluation, and many that favor persistence above all else. In a world where ~5% of incoming graduate students go on to become tenured professors, people who aren't great and know it (or are great but don't know it) drop out early, and the people looking for positions end up being a combination of great people and mediocre people who think they're great.