Kexts are being phased out, and are only changeable if you "reduce security" though, so obviously not something that Apple is supporting, it's more "at your own

Kexts are being phased out, and are only changeable if you "reduce security" though, so obviously not something that Apple is supporting, it's more "at your own risk" so not really the same as what Microsoft is doing (Supporting people plugging into the kernel itself)