There is a list of upstreamed and missing functionality on the Asahi Linux wiki here: https://github.com/AsahiLinux/docs/wiki/Feature-Support
Linux 6.2 adds (checks notes): cpufreq to M1s, devicetree for newer hardware, HDMI out to Mac Studio (2022) and bluetooth support.
That doesn't sound as interesting as this article suggests when stuff like USB, the touchpad, keyboard, speakers, 3.5mm audio, suspend/sleep are all still WIP downstream.
This isn't a dig at the Asahi Linux developers. They're making solid progress. This is just a bad article.