Of course there is always a depth below, which to explore is entirely voluntary. But university courses don't train you directly on the layer you are going to solve the actual problems on your job, they test always at least on layer deeper and then maybe test for one specific algorithm/approach/problem as an example.

> you start learning geometry by reading Pythagoras, or calculus by reading Newton

You can do that, if you actually care about the history of mathematics, but normally it's enough if someone introduces you to a combined theory of e.g. Pythagoras and Newton.

So in a way you are saying, university is often not actually teaching temporal genesis, which I agree with, but my point is that it does teach causal genesis, with citations on the temporal aspect.