The real blame must be put at the feet of those who refuse to serve under a leader twice elected with a massive majority, head of the biggest political party in Europe, with an army of canvassers ready to go in the GE. Having said that, in that interview Abbott made Bellotti look plausible.
But a leader without a cat in hells chance of forming a government? You have MP's who want to make a difference, who want to reverse some of the Tory policies, who want to give more funds to the NHS, education and social care. Why should they support a leader elected by a far left membership whose ideals will never be supported by the wider population, and the leader himself is shown to be dogmatic, inflexible and so out of touch? Socialists can moan, criticise and slate the Tories until they are blue in the face, but until they can offer a viable alternative they have only themselves to blame.