A bachelor's degree once meant more than passing a sufficient number of tests. Now that everyone treats it like a ticket to employment, it barely even means that.
The whole thing got quite apparent when a former roommate of mine studying mechanical engineering asked his father to help him study for a first year course and they figured out, that his father used the exact same literature in his college days as my roommate did at the time. The content hasnt changed, yet we keep throwing time at manually repeating it or going even as far as reinventing it with everyone writing their own script on the topic.
Not as nicely made video lectures. I doubt I can find video classes of some of the upper electives I took in engineering. Sure - textbooks have always been available. But they are dense, and rarely does a class cover the whole book. It helps to have a professor point out "You should know this" and "Don't bother with this - it's just academic detail."