Okay, here’s a big chunk of in my IMO opinion around this for you:
The thing is Fight Club very definitely has a message of saying, “This shit is really fucked up, this is what happens when you offer a bunch of dispossessed people fascism as a solution to their lives,” and yet it’s absolutely loved by MRAs. A lot of that falls firmly at the feet of Fincher (who I love) because he makes all the fucked up shit so absolutely sexy and compelling.
But I’m not in the business of saying, “Don’t make that, it might be used as propaganda”. It’s tricky though because we know that satire can as easily get appropriated by those it’s satirising rather than making them consider.
And I think the social climate does matter. The BNP/UKIP could never really get a foothold during the years before the Global Crash because there were enough people in a positive position financially etc for this sort of thing not to play. I mean Fight Club was just a satire in 1999 but 10-20 years later it feels somewhat prophetic and a significant pointer to society’s issues.
Without seeing the film it’s hard to really know. Taxi Driver is a very complex tale that doesn’t truly paint Travis as fighting against the administration I suppose. If this film becomes the beaten down ‘good’ white guy against the administration then I can see why it might be seen as the sort of film an incel would appreciate. Not sure if that makes it propaganda though, just maybe a film that you’d worry about why a given person loves it until you’re sure it’s the right reason?
[American History X sort of comes to mind here. I’ve always been a bit guarded about white guys online whose take from that film is anything other than it being anti-racist.]