The weirdest guy I ever met in a church was this boy who referred to “Buzz Aldrin and his husband” going to the moon. I was completely baffled, and when I asked if he’d misspoken, he got really angry and accused me of being deliberately ignorant of the facts. It turned out that he was somehow comvinced that Buzz Aldrin and Neil Armstrong were married. It took five Wikipedia articles to convince him otherwise.
so within the universe of Dune, gender roles abide by a rigid false dichotomy created by the bene gesserit - men lead the noble houses, while the women may join their order, and the powers of both are kept intentionally separate. at the same time, the plot demonstrates repeatedly that the role of paul atreides as a character is that of the border between the concepts juxtaposed within dichotomies: he is both an outerworlder and fremen, both harkonnen and atreides, both a duke and a disciple of the bene gesserit.
as such, it follows that within the in-universe gender structure, he occupies the roles of both male and female, thus being functionally and societally nonbinary. in this essay, i will -
Suddenly struck with a need to explain to you how boat pronouns work (I work in the marine industry).
When you're talking about the design of the boat, you say "it".
When the boat is still being built, your say "it".
When the boat is nearing completion, you can say "it" or "she".
When the boat is floating in the water you probably say "she", unless there is still a lot of work to be done (e.g. no engine yet) then you say "it".
When the boat is officially launched and operating, you say "she". If you continue to say "it" at this point you are not incorrect but suspiciously untraditional. You are not playing the game.
If you are referring to a boat you don't really know anything about you may say "it" ("there's a big boat, it's coming this way"). But if you know its name, it's probably "she" ("there's the Waverley, she's on her way to Greenock").
If you are talking about boats in general, you say "it" ("when a boat is hit by a wave it heels over")
If you speak about a boat in complimentary terms, it's "she" ("she's a grand boat"). If you are being disparaging it may be it, but not necessarily ("it's as ugly as sin", "she's a grotty old tub").
If she has a boy's name, she's still she. "Boy James", "King Edward", "Sir David Attenborough"? The pronoun is she.
If it's a dumb barge (no engine), you say it. But if it's a rowing boat (no engine), you say she.
I hope this has cleared things up so that you may not be in danger of misgendering floating objects.