> In my experience, GNU/Linux distros do not usually include 3 seperate GUI settings
I have never seen a GNU/Linux distribution where I didn't have to configure some things via modification of configuration files in a text editor. Even these two differences (GUI vs. text file editing) is much more different than a few different design styles in Windows' control panel. Also the way settings are set in configuration files is IMHO even more different among different GNU/Linux applications than the different design styles in Windows' control panel.
I have never seen a GNU/Linux distribution where I didn't have to configure some things via modification of configuration files in a text editor. Even these two differences (GUI vs. text file editing) is much more different than a few different design styles in Windows' control panel. Also the way settings are set in configuration files is IMHO even more different among different GNU/Linux applications than the different design styles in Windows' control panel.