@ArchiveOS Not sure where the „built on Linux kernel” came from, but that's common misconception for Apple OS'es for some reason.
Neither macOS, iOS or any current OS made by Apple is based on Linux. Apple is using their own kernel: Mach/XNU dated way back to NeXT operating system back in the 80s - it’s even older than Linux. And based on a Mach microkernel + implementation of BSD UNIX subsystem.