It's relatively easy. macOS is easier to set up than Linux, but it will always depend on your specific needs and environment.
E.g.: I go a little bit overboard for the average macOS user:
- custom system- and app-specific keyboard mappings (ultra-modifier on caps-lock; custom tabbing-key-modifier) via Karabiner Elements
- custom trackpad mappings via BetterTouchTool
- custom Time Machine schedule and backup logic; you can vibe-code your install script once and re-use it in the future; just make it idempotent
- custom quake-like Terminal via iTerm
- shell customizations
- custom Alfred workflows
- etc.
If all you need is just a sensible package manager and the terminal to get started, just set up Time Machine with default settings, Homebrew, your shell, and optionally iTerm2, and you're good to go. Other noteworthy power-user tools:
- Hammerspoon
- Syncthing / Resilio Sync
- Arq. Naturally, the usual backup tools also run on macOS: Borg, Kopia, etc.
I mean that's more like old habits no? MacOS is pretty easy to setup. if all your target apps are available on it, you shouldn't have much of a problem.
As a Windows/MacOS/Linux dweller kinto is a godsend so I can have macos keyboard (but you could have linux or windows by default) on all OSes https://kinto.sh/
This part, yes. I assume the setting a complete environment is a little more involved than the 4 commands sibling is also refers to.