Honestly to my untrained eyes, it stills looks like a weird operating system except more complicated, all of that to implement features you could have implement

Honestly to my untrained eyes, it stills looks like a weird operating system except more complicated, all of that to implement features you could have implemented more simply with a less crazy architecture that does not involve launching a program as if it was the complete system of a standalone computer. Now I'm not saying that it is bad to experiment, but if you don't come up beforehand with actual things to test that were not possible on current modern systems or at least substantially more difficult to do instead of quite the opposite, it's not a very useful experiment but just a curious contraption.