Let's look at their editorial staff, specifically Jacob Chapman, on the typical quality content they produce:
You know, now that DARLING in the FRANXX has finally tipped its hand as right-wing propaganda (I fucking called it), it's interesting to see how it contrasts with our Western equivalents of this stuff. It's very different because it's motivated by totally different factors.
For one thing, it's not religiously motivated. DARLING in the FRANXX isn't mourning the death of patriarchal structures because it makes the baby jesus cry, or any god cry for that matter.
Giving women the freedom to work instead of breed (or hey, maybe do both and have a stay-at-home dad!), letting gay people marry, or letting your girlfriend peg you now and again would never lead to FRANXX's dystopian society. But that's what makes it propaganda.
Even though it's wildly different from right-wing propaganda in America, DARLING in the FRANXX takes current-day societal anxieties, exaggerates them, and poses that the solution is to double down on the status quo even harder, framing oppression of others as true rebellion.
It's fascinating/awful, but there is some consolation in that, like all propaganda, it doesn't hold up to scrutiny under its shiny surface. FRANXX can't help but have bad characterization and confusing worldbuilding because its thesis is built on lies about humanity.
Final addendum to this thread: I was basing my "oh the Nazis adopted this one" conjecture entirely on social media/ANN forums reactions. I don't go to any of their hives to check. But that's how obvious these guys are about their dumb shit because lo and behold...
...a few hours later, they found this thread and responded specifically with references and imagery from FRANXX, as in they are definitely into the show and not just owning some lib because they were mentioned at all, so yeah. Proven right on that one.
After locking his Twitter account for some hours, he proceeds to create a follow-up thread wherein he closes with this:
Just because the alt right embraces a thing doesn't make it hyper-conservative in nature. They really like Legend of the Galactic Heroes, for chrissake. But sometimes there's truth to the correlation, and that was all I meant to discuss when bringing up Darling in the FRANXX.