I wouldn't say that. CT during his lifetime was willing to let others edit and publish his father's papers, including Hammond & Scull (Artist and Illustrator, expanded Tom Bombadil, expanded Farmer Giles), Verlyn Flieger (Kullervo, Autrou & Itroun, expanded Smith, expanded On Fairy-Stories (with Doug Anderson)), John Rateliff (Mr Baggins, Return to Bag-end) and Carl Hostetter et al (linguistic papers), and I think there's no reason for the Estate to do otherwise; in fact, perhaps all the more reason to delegate since CT can't do any more himself.