I am, in general, a supporter of Keir Starmer's. You have to win power to be able to use it to help people, Starmer knows that and the left of the Labour party does not. However, this article is not good. I would discount it from some of Chakrabortty's colleagues with a Corbynite axe to grind, but Chakrabortty himself is typically excellent.
You cannot build a party or a government on only one viewpoint. The Tories keep making that mistake and look where it's taking them.