i agree with almost all of this, but i just want to say:

How in windows 10 can I tell if a window has focus or not? In Win 3.1 to 7 and anything running on Linux it was easy: the title bar colour was different. But since Win 8 that was dropped, windows still have focus and modal dialogs but you, the user, can not determine which has what and when.

if you tick “show accent colour on titlebars”, windows does draw the current window titlebar distinctly coloured (so i guess it’s actually better than gnome in that sense)

win10 win11