In your video you mention not being able to use tab, enter etc for system dialogs on Mac, if you enable 'Use keyboard navigation to move focus between controls' in the Keyboard settings (under Shortcuts), you can cycle the focus with tab (and shift+tab), and select them with space. It's one of the first things I enable on a new install :-)
If MacOS didn't have insane defaults, it wouldn't have any defaults at all.
Obviously, I exaggerate, but damn I hate getting a new MacBook for work and have to go disable mouse acceleration, disable autohiding scroll bars, invert the scroll wheel so it goes the RIGHT way, and who knows what else.
