No, you fool, the feature was down for a while when the estates system was put in place. you could see the options of which duchy to change allegiance to, but when you clicked on one of the options it had a notification saying it was "Still TODO; check back in a day or two".
It was put back online two-three turns ago.
Two things.
Firstly, there is no need to be so aggressive.
Second, that's good to hear. I wasn't aware it was disabled at any point.
