It’s fun to understand just for intellectual curiosity’s sake but the number of people who get to work on shipping code where ring-0 knowledge is useful has to be minuscule as a percentage. It feels like a minor miracle I got to work on device drivers in my career. I imagine students might be more worried about completing assignments and good grades than the ins and outs of debuggers, too, though understanding those is important for problems one is more likely to come across in work projects versus smaller school assignments.