FTR, GPU support is very close now and if you really want to you can try it yourself. Basic OpenGL and all desktops should work. (https://vt.social/@lina/109346469312488886) but yeah - definitely not working ootb yet.
I think right now the best option is to run macOS plus Nix for a Linux userland.
However, once GPU support and microphone lands in linux-asahi or mainline, it will be probably good enough to switch to Linux. The webcam is currently WIP. That would make a more or less fully functional machine: https://github.com/AsahiLinux/docs/wiki/Feature-Support
It's a shame there's no comparable x86_64 machine right now. A ThinkPad or a Surface could fill in this gap, especially with a Ryzen CPU. However, at least in the EU, MacBook Airs are much cheaper. Plus, they are fanless.
ARM-based machines from other manufacturers are also starting to appear, e.g. ThinkPad X13s. However, performance is still a bit behind M1 CPUs. Full Linux support may arrive sooner than for MacBook Airs, though. Booting Debian is not too hard right now: https://forums.lenovo.com/t5/Other-Linux-Discussions/Does-an...
I missed the x13s, thank you for bringing it up. So... now that I moved my gaming to Linux on handheld, I can move my laptop Linux to Arm. The current possibilities feel both weird and exciting.