Whedon leaves the social media platform as his Marvel blockbuster hits cinemas – and generates criticism from some viewersJoss Whedon, the director of current Marvel superhero smash hit Avengers: Age of Ultron, has quit Twitter and deleted his account.In a final message he wrote: “Thank you to all the people who’ve been so kind and funny and inspiring up in here.” It comes as the Avengers sequel hits cinemas, and viewers have gone onto Twitter to vent frustrations with the film’s plotlines – from perceived sexism in dealing with Scarlett Johansson’s Black Widow character, to the depiction of lightning-fast superhero Quicksilver.Yep.