Most people are not capable of following simple written instructions.

Most of us here, I'd say are at least somewhat tech savvy and most likely enthusiastic to try new things.

Most people are not like us. If you go out to a local pub and a person after a couple beers cannot do it, most people won't be able/willing to do it. It's sad, but that's the reality we live in. For most people, self custody is hard.