He is actually saying the opposite. He is saying that your CS department is doing you a disservice if it hasn't covered the basics listed by the original poste

He is actually saying the opposite. He is saying that your CS department is doing you a disservice if it hasn't covered the basics listed by the original poster (OS hacking, theory, making a toy language, etc.). My schooling covered all of that, and they even had a web development elective (separate from low level networking and database classes). I was also told by my professors that when the CS college first started, OS, compiler, networking and database classes were mandatory (now they are just part of a large pool of electives), so this is pretty standard stuff.