The problem was that they were "too customizable".
macOS did not ask you to choose a Window Manager & Desktop out of the box.
The Golden Path, "just worked".
Linux required you to know a lot to be workable.
You could make it laden with eyecandy, or use something as spartan as fvwm.
In the new Linux ( working title: Red Gnome ), the Golden Path just works out of the box, without asking thorny questions of the user.
The choice is not either/or:
https://rant.li/ashwin/apple