I love that on macOS all in-app shortcuts are consistently Command+Something, like Q for Quit, W to close a window, and Control is usually for system-wide shortcuts, and Shift/Alt/Option is exactly what it says on the tin: modifiers for alternative behavior. You usually won't see Alt/Option on its own for any shortcut..

..while Windows is all over the place. Like why the heck is Alt+F4 used for quitting an app?? What does 4 stand for here? Death in Japanese and Chinese!?

CUA is a union of Mac like mnemonic command keys on Ctrl plus another set (from IBM/Motif perhaps) that use shift+insert,delete etc.

Alt+F4 through Alt+F9 are for Window Menu operations, like minimize, max. etc. Some besides Alt+F4:Close still work on older window managers, I remember SGI supported all of them.

Newer ones tend to hide or even disable the whole menu! Even Windows as it is further lobotomized.

> I love that on macOS all in-app shortcuts are consistently Command+Something, like Q for Quit, W to close a window

Yeah consistency is great, similarly cmd+t closes a tab, wait cmd+w closes a tab not a window. and cmd+w in vlc does not close vlc, cmd+w in finder does close the window.

This is so hilariously wrong.

Apple commands are not always Command+Something. Go ahead, try to reopen the last closed tab on anything you're using, with the keyboard. Whooops, you pressed three keys. Also try to take a partial screen shot or record the screen. Hey, buddy, what the heck? Why did you press 4 and 5? What do 4 and 5 even mean?