for you argumenting with the ui. you could as well talk about your desktop background image and point out that you have a nicer background in maemo and so maemo is by far better. a none isue. a different story would be if the system prevented you from changing the background image.

same with the ui, which ui you have installed and like the best is a noneissue. however if you cannot simple replace it: thats an issue.

another example: its like you come up and tell that you like opera better then firefox. thats not realy a problem of the n900. install the one you like better. same with the ui. thats an application system.