Because usually the part "my current xorg-based setup works well enough for me" is not true. It will be said, when it comes to wayland, and they don't want to switch... but once hidpi or mixed-dpi displays or reliable screen-lock or something other comes on topic, then suddenly "linux" (not xorg, but linux) is behind the times, doesn't work out of the box as other systems do and requires hours and hours of configuring.
That's the "my current xorg-based setup works well enough for me" in the full glory.