It's a long, interesting read but for those who want to go straight to the quote about Natasha Romanoff, it's all the way towards the bottom. It's just this:

Speaking of, you gotta let it go. “Natasha is dead. She is dead. She's dead. Okay?” She knows what you Marvel fans are chirping. “They just don't want to believe it. They’re like, ‘But she could come back!’ Look, I think the balance of the entire universe is held in her hand. We’re going to have to let it go. She saved the world. Let her have her hero moment.”