In the tech wold we often forget that there is a wide disparity in people's ability to use tech. Take my father, there is no way he could use a password manager, or two factor, it's just never going to happen. He has a notebook of passwords, that's how he works and he won't change.
We cannot change everyones behaviour, no matter how much it would be better for them. That's a very well learnt lesson, over and over.
The world in 30 years time will be very different, the eldest generations will have grown up with passwords and the internet. Many will have been using password managers, 2 factor, other authentication systems and devices for much of their lives. It's going to be a slow, trickle down change, from "high tech" services down to everyday sites and systems.