Author comment -- could you lot miss the point any more widely?
Sheesh, people. You lot couldn't have failed any more heroically to NOT GET IT.
 I was not promoting the Oberon SBC.
I was not even promoting the Oberon OS itself.
What I was saying is this:
As we now have effectively-free super-simple hardware, we now need free, super-simple software to go with it.
I am not proposing that Oberon is this software. It was merely a convenient example, since this little device just recently shipped (and sold out).
The culture of computing for several decades has been C and Unix or Unix-like OSes. Oberon shows that an essentially one-man language, compiler and OS can produce a real, viable, practical, usable OS that an entire University department ran on for decades.
The IT industry assumes that operating systems have to be written in C to work -- wrong -- and must by nature be big and complex -- wrong.
I'm not saying it should be Oberon. It should not be Oberon. Oberon is obsolete.
But it should be something simple, clean, modern, written in a single language from the bottom of the OS stack to the top -- and that language should not be C or any relative or derivative of C, because C is old, outmoded and there are better tools: easier, safer, more powerful, more capable.
We should start over, using the lessons we have learned. We should give kids something small, fast, simple, clean, efficient. Not piles of kludge layered on top of a late-1960s hack.
No, we should not be teaching children with "real world" tools. That is for job training. Education is not job training, and vice versa. You don't teach schoolkids woodwork with chainsaws and 100m tall trees. You don't teach chemistry in an oil refinery. You use little safe educational tools.
 Oberon is not Pascal.
You lot evolved from ape-like hominids. (Clearly not very far, in some cases.) That doesn't mean you are still apes. You're human now. (FSVO 'human'.)
Pascal evolved into Modula-2, which evolved into Oberon, Oberon 2, Oberon-V, Oberon-07, Active Oberon, Zonnon and so on.
Oberon the OS evolved into AOS, then into Bluebottle, then into A2.
 Oberon the language and Oberon the operating system are not the same.
No, there is no Oberon OS for the Pi. Yes, there are compilers for Oberon the language for ARM and for the Pi. Using them, someone could port the OS, sure. It has not been done, partly because, as I said, it's an effectively obsolete set of tools that has been long superseded.