I think "most of what I learned is inapplicable to my job" is kind of inevitable in any CS program that tries to expose students to a breadth of topics before they graduate and get hired into specialized jobs. The trick is that the "most" will vary from person to person.

As a fellow 1980s CS person, I too got a lot of DSA coverage, but I ended up using a respectable amount of it when I was working at low-level systems programming jobs. I have never used what I learned in my computer graphics class. But I had classmates who went into animation and used that stuff every day.

Agreed about the lack of any education about the "engineering" side of the work, though. One challenge is that engineering is mostly a group activity but education is focused on individual learning. With some exceptions, you don't get a group grades in classes, and usually, collaborating with other students on your homework or your tests is considered "cheating" rather than "teamwork." Professors aren't in the habit of repeatedly changing the assignment out from under you while you're halfway finished, but dealing well with unpredictably shifting requirements is a huge part of the job.