Neil McCormick: Not suitable for mixing

Ben Barnes, who played friend of Bono Neil McCormick in the movie Did I Tell You About That Thing That Happened When I Was With Bono?, was told not to meet him:

Barnes said: "I wasn't allowed to meet him. The director Nick Hamm said, 'He's so annoying in real life and so irritating that if you actually meet him and play him anything like he is in real life, the film will be unwatchable'."

There's not many biographical films which set out to make the central figure as unrealistic as possible, are there?