There's a lot of video content on a lot of topics, but their content is shallow. If you want to get a deep understanding of something, reading textbooks and official documentation is likely the way to go.
I learned CS from nothing but online media. Videos weren't my primary source, but blog posts and documentation was. Also working with smart people, and working on hard problems.
I mean new technologies keep coming out basically every day, there will never be enough videos to cover all of them.
Have you found a CS/programming topic without enough video content to learn from?
I haven't so far. Am I ever going to run into a topic that I can't learn on video? Can I get a bachelor's or master's degree level computer science/programming education from all the content online?