Men Like Desi Collins
I feel sorry for the poor guy. He didn't deserve to be killed, especially not like that. And he certainly didn't deserve for his name to be forever demonised in relation to a kidnap and rape he DID NOT commit.
However, men like Desi sadly share some responsibility for their ultimate fates.
Apparently this was made more explicit in the book, but Desi is still the ultimate self-styled 'White Knight', the type of pathetic borderline misandrist sad-sack who has a thing for female 'victims'. The type of guy who is unable to regard women and men as equals, and thus that women can be every bit as mendacious, twisted and corrupt as any man, and instead buys the female supremacist narrative that men are innately evil, women are innately good (i.e. the 'women are wonderful effect' as acknowledged by Alice Eagly), and falls hook-line-and-sinker for the lie that Nick just had to have abused Amy, despite the fact that it's already abundantly clear that Amy has form as a liar who faked her own death.
Desi is not an evil guy. I don't even think he was a bad person for his eventual complicity in Amy's plan to frame Nick. But he is symptomatic of the type of weak, woolly-headed and naïve modern man (like the FBI idiots and the cop who takes an immediate dislike to Nick) who will automatically believe anything a woman tells them.
And of course I just must be a 'misogynist' or a MRA for making these observations..
And yet, it took a woman, Gillian Flynn, the brilliant writer of Gone Girl to articulate the very things today's ultra politically correct society with its legion of self-flagellating self-hating egregiously apologetic men are too afraid to be honest about.
The truth is that smart brilliant women like Alice Eagly and Gillian Flynn are able to cut through the bullshit, and tell it like it is about weak, gullible, naïve, misandrist men.