So it’s finally happened. Cancel culture has come for Mumford and Sons. Winston Marshall, former banjo player in the hugely successful group, has left the band after becoming embroiled in a Twitterstorm earlier this year, during which he was essentially smeared as a hard-right lunatic. It seems that the culture war can now leave no corner of actual culture untouched, from the Royal Academy to middle-of-the-road folk rock.