It was not super difficult to get Gentoo running on an m1 MacBook with the (unsupported) instructions some of the Asahi folks left around. I guess Arch might be a bit more difficult in some ways, given the weird status of arm64 being a different project from core Arch?
Arch on aarch64 still exists but it is poorly maintained. I switched to Fedora and I've been happy with that choice, although I do miss the AUR at times.
