Because it is too little too late for most, the momentum for it died for it ages ago. Besides he hasn't gone full "Woken" Yet. It has just been promos back and forward between him and Bray, nothing over the top yet if you don't count him talking to a fish. I call bullshit on the stories that he has full control of the character. By Now Vangaurd would have shown up at the Wyatt compound shooting at Bray's sheep. The two would have had a magic duel. Senor Benjamin would have tazed someone by now.