[bello]

While it's true that there is an "infinite supply of these problems", a good CS program it's supposed to teach you how to think, hence teaching you how to learn.

If you have a very solid understanding of the fundamentals, you should be able to go and solve problems you've never seen before. If you don't, you could be stuck using other people's solutions to your problems, hence not being able to solve new ones that you might encounter.