I've heard almost the exact same thing from MEs as well. Both are sooo broad. I mead I get WHY they try to teach you anything and everything, but it does seem overwhelming and at the same time seems like you haven't learned anything useful even when you really have. You simply don't know if you'll be working at a nuclear power plant dealing with thermodynamics or a car maker mostly dealing with design or as a project manager at some other company dealing with vibrations. There's just no way to know. The path your work life leads is impossible to predict so they sort of have to teach you a little about everything.