Libraries are good, and a great community resource that should be treasured. However, no library can have the sheer volume of information available that YouTube and the Internet do. There is also the benefit of having more kinds of content, plus the ease of putting information out there.

For example, say I want to learn about the specifics of the defense economics of the war in Ukraine. Sure, I could wait 15 years for books to be published about it, hope my local library buys it, and then go and read it. Or I could log on to YouTube right now and go watch the latest Perun video on it which is also more entertaining. This also is an example of speed of new information being available on current events.

Both of these things have their strengths and weaknesses but it is simply a fact that YouTube has changed the availability of information to quite a high degree.