Before the inevitable "Apple KILLS unsupported OSes" spin.
If Apple wanted to kill Linux (or *BSD), they wouldn't have to subtly break it in a macOS beta. They designed the security model on these machines to allow booting 3rd party OS's. It's not a jailbreak.
asahilinux.org/docs/platfor...
PSA for #AsahiLinux users: Do NOT upgrade to macOS 27 Golden Gate!
Apple has changed how the boot picker and Startup Disk applications detect valid OS boot volumes. When using either from macOS 27, your Asahi partition will not be visible! We believe this to be a bug, and have filed a report.