This is such a stupid "article." But, to be totally fair, it's not untrue. What John Doyle said about Shug's appearance having to lift the show is insightful. When Jennifer Hudson started singing, it sounded as incredible as you'd expect Jennifer Hudson to sound. But she had absolutely no connection to anything, emotionally. It just bogged down her scenes, for me.
Without even having seen Heather in the role, I'm sure she's bringing her A game in a way Jennifer just couldn't. And the relationship between Shug and Celie has to be potent to make that spark of change in Celie believable. I hope to return to see her in it and to see Cynthia's beautiful performance again.