I initially misread the reaction of Labour’s leading Corbynites and social media outriders to the party’s most cataclysmic defeat since 1935. I thought they were arguing Labour lost because of Brexit; that Jeremy Corbyn’s unpopularity was purely due to media vilification; and its manifesto evoked only a positive response on the doorstep simply because they wanted to persuade members they should vote for a continuity Corbynite candidate in the forthcoming leadership election.