the high-level decisions are essenitally identical, and the main differences are like "how exactly the syscalls get executed" and "i can't be bothered add a handle array to the IPC mechanism so capabilities are just HMAC-signed global indexes"
it could still be potentially something to build because a Zircon-style OS kernel that is even more minimal and aimed at amateur OS research seems valuable, but it's a lot harder to justify spending my time on it now