Some people don't want to be taught about some things because they don't care enough about them. I was told a story as a kid about a grandma that didn't want to learn to read and write. It's the same thing here — there are people who don't want a smartphone. They were just fine with an old cell phone that could only call and text, but then the society forced them to buy a smartphone, so they did, but they still don't really want it. It's still a burden to them. It still creates more problems for them than it solves. I know several people like that.