Why Does Buhari Not Entertain Interviews Like Other Previous President ?

During the era of obasanjo and Jonathan as Nigerian president journalists rallied round and throws several question at them and they sometimes give reply such questions thrown at them. Sometimes they do it live on television.
But that if Buhari is just surprising to me. He does not entertain any question from journalist, even the journalists are very scared of standing by to question his actions.

Even before Buhari became president during the time most presidential candidate was to come up for a debate, he never honoured the invitation.

This reminds me of the military era where journalist don't even venture into the idea of throwing questions at them.

Even president of the developed nations as well entertain questions from journalist after making a live speech.

Well there is time for everything, no president can rule forever.

So Why Does Buhari Not Entertain Interviews Like Other Previous President ?