No one who would use the terminal would need to find the terminal. It automatically prompts you to install Xcode whenever you try to install a package that requires it through terminal. A “proper” package manager is a nonsense distinction and it’s literally one terminal command similar to any Linux distro that doesn’t include it. The same applies to window management. That all depends on the distro you pick and whether it does what you want out of the box. You’re either being disingenuous or you’re ignorant to how variable Linux actually is.