Ah, wow. I like that they ported the accidental behavior deliberately into Windows: Warning: The uninstallation process deletes the folder Steam was installed

Ah, wow. I like that they ported the accidental behavior deliberately into Windows: Warning: The uninstallation process deletes the folder Steam was installed to to ensure it is fully uninstalled. If you accidentally installed Steam to a folder containing other data, for example C:\Program Files (x86)\ instead of C:\Program Files (x86)\Steam\..."