The real downside for me is not having Linux support.

It would take Apple one or two engineers to make Linux life much easier on macs. But Linux is outside their walled garden so it's ignored.

Same here. Sadly I think the voices like ours won't be heard, though, because Apple's looking for someone who's going to buy in on the whole ecosystem, and I think we're not it. Or at least I'm not.

I’m done with macOS.

My Mac Mini is strictly a headless server for llama.cpp.

I use a Linux workstation.

If I were limited to use Mac hardware , I would install Linux in VMware Fusion and work from there.