Common courtesy would suggest that an explanation would be given, as a minimum.
It's really very disappointing to see someone of your stature and achievements, with such an active profile, and having successfully inspired so many to join your publications as editors, writers and readers, to be treated with such impertinence.
Board members of Medium, please rectify. Or are you making a statement that Medium is really for younger people from the White dominant North? The rest of us don't have a say? Dr Yildiz can be contributing far more, but his voice counts far less than the chosen few, the innner circle of internet technocrats? Is Medium the online equivalent of an oligarchy? Are the rest of us just the 'Niggers on the plantation', not having even 3/5th of a presence?