And kids, this is how I learned to program.
I think that is the killer right now, the amount of barriers to moving pixels on the screen is very high relative to how it was for us on the 8bits.
A smartphone is actually much more interesting than a computer, when you look at it (camera, microphone, gyroscope, GPS, Bluetooth...).
On the other hand if you want something like this for kids now there's Pico-8.
https://www.lexaloffle.com/pico-8.php
Even has a discount for teachers. Only one copy needed for the entire class in school