This kind of limited device is something I've been thinking about with respect to what interactions I want my children to have with computers. I remember when I was 9 years old and we got these computers at the lab at school and we wrote some LOGO and BASIC and it was a mind-blowing experience. We were drawing SQUARES! And we were making TRIANGLES of ASTERISKS! Hahaha, what a glorious thing that felt like.
I got so much joy from computers and I'd like my kids to have that kind of experience too without accidentally detouring into social media (which has my mind in a vice grip).
Still a couple of years away, but I think I'd like to evaluate this kind of device then and see if it's the right model to use.