There's no need to be snarky. Fedora and Red Hat are very concerned about the fragmentation of ARM, and the fact that ARM is almost completely different from everything else. We actively try to make sure that upstream kernels boot unmodified out of the box on new aarch64 hardware as it comes out, working closely with vendors to ensure they upstream all their drivers and don't do stupid stuff. We have also co-written (with ARM) standards to ensure that any operating system will boot unmodified out of the box on any aarch64 server hardware, because in the end that's what is required to turn ARM into a serious server platform.