I’ve dug through message boards and bug reports, and a lot of the features that MacOS has will never be implemented. I’m taking about features released 13+ years ago on OS X 10.4.
Highly, highly subjective. I use Linux as my main OS and have for many years.
Of course everything is not perfect, but that wasn't true in mac either. I had to hack and shim so many things to get my system to behave the way I wanted to. There were also horrible bugs like where plugging in an external (Apple branded) monitor would cause the laptop screen to go black forever until I held down the power button.
I just bought parts for a desktop that's literally 4x cheaper than a similarly specced Mac Pro with the usual caveats (Ryzen instead of Xeon, non ECC, etc.) It will have to be pretty rough for me to consider investing anything beyond a Mac Mini so I can have access to Xcode once my MBP dies.
For example changing from a low-resolution (non-hidpi) screen to a hidpi one doesn't work that great. You want to watch netflix or prime video in FHD? Not going to happen (although, admittedly, that's not linux's fault but a DRM-related decision).
I've noticed that, as usual, all this is highly dependent on what one does with the computer. If it's a laptop often used with a high resolution external screen and for on-line media consumption, the experience can be less than ideal. If it's a working computer used in fixed conditions, the experience can be outright great. My "work" computer is a desktop linux with a UHD screen and I absolutely love working on it. But for random hanging around on the internet, watching a movie or whatever, I'll grab my macbook.
Care to name any? Other times I’ve heard things like this on HN I’ve been able to locate them.
OK here's another, very related: the ability to have apps remember their open files when you quit and re-open them.
These are significant productivity boosters, and I will miss them. It's definitely a trade-off, but now Apple has tipped the scales too much in favour of Linux...for me.