macOS uses Software Update to manage system packages, and AppStore to manage that world, and for everything else, MacPorts (if you care about your system homebrew is not an option).
> - GNU coreutils and related utilities (sed, grep, find, etc.)
macOS has a userland... you seriously can't find /usr/bin/sed in macOS? Seriously?
> - good filesystems
uh, if you actually think ext4 is any good, then I guess you just don't care about massive data loss. wtLf??!?
> - 'root is root'; no policy or other bullshit restricting what root can do by default
Always good to have unrestricted access to root for all those necessary privilege escalations. Security policy just gets in the way. Who has time to activate this and authenticate that?
> - lots of featureful, performant terminal emulators (to the point that the DE default is almost always fine)
You do realize that every single beloved terminal emulator you use on Linux most likely also runs on macOS, right?
> - some choice w/r/t desktop experience
omg. You are not required to run quartz. You can run X11 if you really want, and you can even run gnome or xfce, any window manager you want in macOS. Oh, but what you mean is because you don't know how then it can't be done.
> - popular apps don't just entirely stop working between OS releases
Because you're not aware of Linux breaking applications between releases, I guess it doesn't happen, and because upgrading system software the moment it is released is the new, state of the art sysadmin philosophy.
> - pretty much everything is discoverable and configurable if you're determined
kind of an empty observation, because this is true of all things
Stick with Linux, please. The less you know, the better off everyone else is.