In the situation with Felleisen, I was around twenty, in a new city, new to the academic world. The student I mentioned was one of one or two female students in the entire class and already unsure of her place. Asking people in those situations to not take insults from their professors, famous people in the field, gatekeepers personally is to ask them to overcome human nature itself. I would describe that as a hard problem.
I want to distinguish between a hardass and an asshole. Some people are conflating them, and the middle section of their Venn diagram is not empty, but they are not the same thing!! There are more choices than cuddly "everybody gets a trophy" snowflakes and calling children worthless morons! Everyone should have a hardass professor or a hardass boss at least once in their life. These people have high standards and push you, they don't accept excuses. You learn to work. They don't insult you or throw a fit, though. Hardass professor: "This is not good work. These are the reasons your work is bad. I expect better from you next time." Asshole: "This is not good work. These are the reasons you are a stupid and worthless person."
On the other hand, there are drill sergeants and similar situations. I don't know how to work them into my model. Some people seem to thrive in an environment like that. I wonder what the difference is?