I don't think Corbyn sticking by his manifesto and campaign commitments, calling out Chuku's opportunism for what it is and denying UKIP and Farage a door back into relevance is going from hero to zero.
The one major concern I, and many others on the left, have over Corbyn is his ongoing links to the toxic abusers on the left such as the SWP and Steve Hadley and a failure to address that will cause an exodus and him to plummet in people's estimations.