I have Linux Mint on a 2012 Mac mini that purrs along very nicely. I also installed the Xfce version on a 2009 Mini (2.5 Ghz core 2 duo) that also works pretty well. The SSD is a big help there.I have Intel Macs, two of which are running unsupported macOS via OCLP. Sonoma and Monterey, respectively. I have two older Intel Macs with Ubuntu, and they work perfectly. I could technically install unsupported macOS on them, but they would be too slow. When any viable macOS is Apple Silicon only, I'll move to Ubuntu, I guess. I have a couple of Windows laptops when I need to do Windows only tasks (a few).
I have recently acquired a 2006 mini. No 2 in that Core Duo, 32 bit only. Finding a Linux distro for that was a challenge but there are a few out there. I also put Snow Leopard on the other partition. What surprised me the most was how quick the user interface is. Apple has piled an endless pile of bloat on their systems since 10.6.
I also agree with the comment above about the non-deletable junk (at least to me) apps. Then we have messages, photobooth, Mission Control, News, Podcasts, Siri, TV, voice memos, and for that matter, FaceTime. Fortunately Pages, Numbers and Keynote are deletable and were tossed off the laptop as soon as I got logged in the first time. They don't support ODF so are useless.
I have no problem with Apple putting those apps on new machines just so you know they are there, but why can't I Command-Delete them like Pages? All they do is clutter up the Applications menu.
I just discovered Cairo-dock on the Linux desktop. It came standard on the 32 bit Emmabuntu install that went (however reluctantly) on the 2006 Mini. I'll see how Dock-like I can get that.
The Cinnamon desktop on Linux looks a lot like Windows 7. Plain but functional. Shuttleworth has done a great job of keeping those unruly Linux programmers pointed toward a common goal. Linux is pretty workable now.