Windows is reasonably OK, but MacOS' window management has always been really terrible.

Just think through the many different iterations over the years of what the green button on the deco does, which still isn't working consistently, same as double-clicking the title bar. Not to mention that whatever the Maximize-alike is that you can set title bar double click too (the options being Zoom and Fill, buried in settings somewhere) is different from dragging the title bar against the top of the screen and chosing single tile. Which is different from Control-Clicking the green button. Maybe. It depends on the app.

What a mess.

Both of them miss (without add-ons) convenience niche features I cherish, such as the ability to pin arbitrary windows on-top, but at least the basics in Windows work alright and moreover predictably and reliabily. Window management in MacOS just feels neglected and broken.

There may be many other ways in which MacOS shines as a desktop OS, and certainly in terms of display server tech it has innovated by going compositing first, but the window manager is bizarrely bad.

> Windows is reasonably OK,

Doesn't windows conflate window and process? That should kick it to the bottom of the bin by default.

> There may be many other ways in which MacOS shines as a desktop OS

May I suggest examining why your keyboard has a "home" key