This is exactly why I’ve been eyeing the new Macbook Air as well. I currently use a Thinkpad as a “bit bucket” for recording music (using Reaper, since it’s so reliable) and then transfer the audio files to my desktop machine (a Mac) for editing and mixing in Ardour and/or Mixbus. But the Thinkpad has a fan; I’ve almost never heard it and recording isn’t a very taxing process so I probably never will, but there’s always that little worry in my head that it might come on during a good take (and I’m almost always one of the musicians I’m recording, so the laptop is in the room with me, close by).
I’ve used my Sound Devices MixPre 6, with the musician plugin, as a substitute for laptop-based recording and it’s brilliant, especially if you add an external control surface (so you can set gain, pan, and other parameters with dedicated knobs; use regular faders for mixing instead of the MixPre’s front dials; and have dedicated buttons for dropping markers and navigating instantly from one marker to the next). And I like having Wingman running on a tablet so I get a larger view of the meters (and I can name my tracks with Wingman). But there are still advantages to laptop recording, including adding notes to markers and tracks, and in general it’s a more ergonomic solution than dealing with the MixPre’s tiny screen.
A fanless Macbook Air is tempting. As for the Mini, I have a 2014 Mini and have heard the fan maybe twice in all these years; I don’t know if it would run more frequently with the M1 but it’s probably the other way 'round…you’d probably hear it even less. I’ve never heard it when working with audio, only video.