[awilfox]

I agree that it should save to the format it was previously saved in as a default, but it isn't necessarily user-hostile. "Normal" people coming over to a Mac probably want to use Pages, and might even appreciate the transparent conversion of their documents to the native format.

If the option to export was missing, that would be user-hostile IMO. Same with your example of GNOME disallowing desktop icons – the feature is missing, not just something you have to enable.