I don't know what "ready for prime time desktop use" means. I suspect it means different things for different people.

But with Linux being mostly hobbyist-friendly a number of folks have custom setups and do not want to be forced into the standardized mold for the sake of making it super smooth to transition from Windows.

I have such a setup (using FVWM with customized key bindings and virtual layout that I like, which cannot work under Wayland), so can I donate some money to Microsoft to keep Windows users less grumpy and not bringing yet another eternal September to Linux. I like my xorg, thank you very much :).