Well that's an argument from ignorance if I ever heard one. Much of anything I've ever learned is from the internet ( e.g. Wikipedia, books, oddly specific youtube vidoes on car repair), and I'd have a much harder time in my career without the amount of material on Math/CS online. One can literally find top level educational material for free, whether from sources like MIT opencourseware or the many textbooks freely available. I'm sure other people have found great uses for the web too.
I suspect you're caught in a bit of a bubble.