It's all but universally acknowledged that technology represents the highest-leverage tool in the arsenal of getting things done in a leveraged way and this includes learning difficult topics in a time-efficient way.This isn't an argument. Not everyone wants to stare at a computer for 15 hours a day. Maybe you do. Some people prefer in-person interaction and discussion, others don't.
Yes, in 1-to-1 comparisons, a YouTube video about a topic may be better than a university lecture in which you are mute and can't interact with the professor. But university isn't just mutely watching less qualified professors give lectures. Lectures are but a small part of the entire university experience, which also includes: learning how to work with others, discussion groups, office hours with the professor, managing your time to complete tasks, building social skills, dating, on and on. It's a complete package. The key element is that you are immersed in this environment and interact with the community of people around you. A university is not merely a place that stores information. When you attend a quality university, all of these things are a part of the learning experience. They are not separate.
To use myself as an example: I have a degree in philosophy from one of the higher-ranking programs in the world. The Internet and YouTube are full of lectures and podcasts and free books about philosophy. And yet – none of them comes even close to the experience of sitting in a room for 3 hours intensely discussing metaphysics, or logic, or Kant, or another complex philosophical topic with a small group of other students and professors. That doesn't happen on the Internet and no amount of innovative video formats is going to change it. When you directly interact with another human being face-to-face and discuss/critique ideas, (in my experience) you learn much better than just watching videos. There is a huge difference between someone that has merely read a lot of books on a topic, and someone that has been through a rigorous discussion and critique with qualified interlocutors.
Finally, on the networking element: if you look at most of the actual top performers in the tech industry, they all have one thing in common: they know each other. Learning how to interact with people – and not merely acquiring information – is a key element of actually being successful. And that's still learning. It's not some nebulous hand-wavy thing that you can brush away. Building the next Google, which is what the original essay was about, necessarily requires you to build and navigate complex human social structures. It's not something you can just watch in a video. Merely having information in your head isn't actually that useful if your goal is build a company.