Re: its rubbish
"Yep, same old UI. That one the customers love, and know how to use..."
Ignorant customers love it. Pull out an Android phone and show them homescreen widgets (such as your email inbox or your calendar) and they instantly go "wow! that would be great to have!" Sure, you can launch an App, perhaps have to wait for it to open/load depending on your iOS, but having it on the homescreen is very convenient. We'll see how long until Apple steals widgets like they did the notification pulldown...
The only valid point you give is the "know how to use." Swapping a UI in a major way (Ribbons, in your example, or the Not-Metro UI of Win8) is a major problem. However, the transition can be done, and it can sometimes be fairly painless. Look at how Android added a task manager in 3.0+. I'm not a big fan of the permanent black bar on their Tablets, but the phone execution of 4.0 tasks is flawless. Apple could do the same if they tried.