Simple reason
Most people are thick. Really, really thick. There are more young(er) people online, using smartphones etc than old(er) people. The older ones who use these things tend to have some interest in what they are using because generally speaking, that's how olduns were brought up. They tend to be at the smarter end of the spectrum, whereas, at the younger end, everyone uses the kit.
So, there's an imbalance in smarts to tech ratio, which is why it's happening. Simples.