The key things with these devices was the accessibility and the ability to "get under the covers" and use it.
It wasn't a device to delivery courses, it was a tool - just as much as a hammer in shop class was a tool. Yea, we all played Oregon trail... but I've still got fond memories of Rocky's Boots ( https://archive.org/details/Rockys_Boots_1982_Learning_Compa... ).
Chromebooks and smart phones (I believe) are too far away from the computing of the device.
With the Apple ][+ I recall wanting to make a program that showed maps of the world in low rez graphics... and the corresponding learning more about loops than the librarian understood and using the DATA block along with READ to read it and learning how to compress 1,1,1,1,1,1,1,1 into 255.
There are a couple things going on though with the expectations. I could write a program that would look amateur but comparable to what was professional at that time using BASIC. The web of old that we fondly look back to with Myspace didn't take masterful skills to get to what was similarly acceptable.
Today, to get something that is vaguely comparable to what you expect when you use a computing device takes a lot of work. Swift Playgrounds and Scratch aren't enough. There is a high discouragement factor and the expectations of what someone who wants to do what I did with BASIC or simple web pages back then is a lot of work.
I would be tempted to say that instead of general computing and scratch we should look at teaching kids Excel... and I might get some flack for that. The main thing is that with Excel you look at what can be done and it's not too far from making a column have the values of 1, 2, 4, 8, 16. You can get something that is useful without too much work and without expecting it to look as nice as a fancy page or game. And as they learn how to do more, you can introduce them to =LAMBDA.
I agree that Excel should be taught, but also something like Mathematica (or some other CAS, rather than forcing TI calculators on kids). Python, perhaps through Jupyter Notebooks, would also probably be good too.
It's obviously terrible for the environment and it's also probably terrible for cognitive development. Pen and paper is a way better solution for kids and teenagers.
https://en.m.wikipedia.org/wiki/River_(typography)