What you learn in college

Half of what you learn in your first year is obsolete by the time you finish? Absolutely patent nonsense.

What do you do in the first year of a CS degree? Probably discrete maths, logic, calculus, certainly a couple of languages like Java, C, ML, computer architecture, some basic software engineering.

Explain to me how any of that could be obsolete within ten years, let alone four. And then explain to me where you got the "half" figure from.

The maths hasn't changed in thirty years, and that's when you include the advanced stuff like category theory. The languages are all twenty years old plus. Architecture is all the same apart from some new buses and multicore.

Just maybe some of the software engineering principles won't be fashionable when you come to graduate, but you're on a CS degree aren't you? Software engineering is a means to an end, not the topic of your study.