when I think of a felix-and-mylene dynamic, I mainly consider it based on Mylene's unshakeable faith in humanity versus Felix's unshakeable lack of faith in it? Mylene wants to change the system via protest and reform while Felix wants to destroy it entirely and build anew.
She's hoping to build a better world through advocacy and diplomacy meanwhile Felix is in full-on revolution, bring out the guillotine, we HAVE to kill the elite capitalist abusers there is no other choice. For Mylene, peace and respect have to be part of that path to a better future; Felix is very Frankenstein's Creature-esque in his belief that if your oppressors don't show you any respect and don't see your life as having value, then you shouldn't have to play nice with them at all.
Like. She is so certain that their voices will be heard and Felix is so certain that they will always fall upon deaf ears. idk.
THIS IS IT!!! LITERALLY!!! PERFECT INCREDIBLE BEAUTIFUL NO NOTES!!!! some notes. but it's added notes cause you said such good things.
I (and Silu) think the issue is that they're both leftist, but Felix is so misanthropic so it's a very anti-humanist/anti-natalist/anti-life outlook. Communism is just another way for him to be a little rebel bad boy and see the system as something evil and unfixable and awful. Mylene isn't like that, she believes in what she believes because she holds ideas like the inherent good of humanity and an inherent obligation to help your follow man close to her heart.
Felix is, to a T, the kind of communist that Disco Elysium refers to as a "very, very smart boy with something like a university degree in Truth" that was "fucked over" by Marx's socio-economic theory.
No, he's not gonna try and make the world better, that's stupid, He's just gonna get all mad at the suckery of it all and maybe do a magic terrorism genocide about it but not actually something productive. No! He likes the violence, he got it from his daddy, and he's gonna wield it the way it was wielded on him but better and more justified this time. "The world is bad and it will be bad forever, but I'm gonna start doing the bad in the other direction for once." Et cetera, et cetera.
There's also the idea that his communist views are very influenced by his aristocratic upbringing, making him a little hypocritical in a way. Mylene at least isn't literally related to royalty to even if she was all revolutionary about it there wouldn't be any irony to it.
But if my Claudrien stuff demonstrates anything, it's that I do love a good, fraught, dysfunctional pessimism x optimism dynamic, and Mylix does that super well.