A 2020 Air is still a fine mac, which doesn’t really need to run Linux yet, and is very reliable and efficient and getting full security updates. It’s possible to lock down macOS to nearly Linux levels of independence and privacy if you want, with far less effort than switching OS, and it would have far better hardware integration, especially battery and trackpad.

Debian on an intel mini is great, I can attest, but on laptops stretch out macOS usage with OCLP or something before switching. Unless, like me, you’re awash in old macs, then you can compare systems side by side for yourself.