Any suggestion that the election of Donald Trump or that the 52/48 Brexit, vote could not have been achieved without the support of a cohort of ignorant, poorly educated voters would be dismissed as the kind of patronising arrogance that means Hilary Clinton can spend more time with her granddaughter Charlotte than she had anticipated and that David Cameron, at just 51, is free to write his autobiography, to give a “frank” account of his premiership.