If they are going to use a completely different kernel anyway, why bother with Linux? Why not create something more innovative, and this time with solid securit

If they are going to use a completely different kernel anyway, why bother with Linux? Why not create something more innovative, and this time with solid security in mind. There was an article here a few months ago about 5 (?) new innovative operating systems that have security in mind. One was MirageOS and there was another one I liked - something about resource starvation - but I can't remember the name now. There's also the Ethos OS, that comes with the "encrypted by default" MinimaLT networking stack, and so on. I'd be much more excited about a "new" Windows that's open source and is truly built for the 21st century with (cyber-) security in mind, than just dumping the old Windows onto the Linux kernel (and I bet they won't even bother to implement grsec in that, if they do it, because it's yet another patched-up solution for an unsecure kernel, that breaks a lot of stuff). It would also be lovely if this new kernel was built with Rust or some other type-safe language.