Earlier quoted context omitted.
I don't know the answer^, but how old is your current old Mac hardware? I don't know about the desktops, but Macbooks from 2016 are not well supported hardware-wise in Linux - things like no WiFi even. There was a good GitHub repo tracking it for up to I think the first touchbar Pro, and basically it was dismal then and only got worse (according to repo owner who consequently stopped bothering iirc). So.. depending w…
Yeah, I think you mean this repo: https://github.com/Dunedan/mbp-2016-linux I bought a 2017 MBP hoping the situation would eventually improve but it never did, so I never got around to installing Linux. I'm expecting it'll be even worse for these M1 systems.
It is a shame, it's not something I ever really did (or not for long, for a period I do recall having Arch on my 2013 Air) but I like the idea - I like Apple's hardware, just not the software.