It's a laptop minus the screen... that's all it amounts to. It's a keyboard with the proc and memory underneath it. I don't understand how any of this is revolutionary or special. Hell, it doesn't even have a battery.
I think the price alone makes it revolutionary. Laptops aren't $100 brand new and if it were what would that screen look like? Most people who would benefit from this price probably have a TV they can connect it to.
Also, screens last a long time, but it's the computers themselves that need continual ugrading. Case in point: we have a Dell screen from 18 year ago. The Dell desktop long since became obsolete.
So this makes a lot of sense economically, especially for cash-strapped organizations like schools that have to manage large fleets of machines.
Stuff that isn't touched and lasts long (screens) don't get replaced. Stuff that is touched (and likely to wear out over time) like keyboards or gets out of date due to Moore's Law (computer) is fused into one package, so there are fewer cables to worry about getting unplugged, worn out, etc.
That's fair, but there's another problem. It's hard enough to find a regular educator that's qualified to teach kids about computers on a Windows or Apple. Linux is going to be easier?
The education sector has already bought into Chromebooks, which means that most in-class technology solutions are going to target the browser. The only thing anyone will need to learn to move between OSes is: how do I turn it on, where's the button to launch the browser, how do I turn it off. Everything else will already be familiar.