That's kind of the point, though. Naturally, a consequence of moving functionality out of the kernel and into userspace is that the kernel does less. That means

That's kind of the point, though. Naturally, a consequence of moving functionality out of the kernel and into userspace is that the kernel does less. That means rethinking the idea of how we build software (WRT what an OS means and what a platform API looks like), but on the other hand our current mode of building software is objectively dogshit, so that's no great loss.