I mean, like, he's not even correct by 3rd edition lore standards. The closest the 3rd edition Necron codex comes to addressing the topic of Necron intelligence and talking is saying that Necron Lords are silent (pages 2 and 16) but also saying that some Necrons retained their intelligence albeit in a diminished capacity (page 25). It doesn't say all Necrons are mute, or even that they rarely speak.
I'm currently getting some 40k lore-hounds to fact check whether or not they were silent in other pre-5th edition lore.
To actually contribute to the thread though, I recently re-read my favorite sci fi story "Virgin Planet", by Poul Anderson from like 1959.
The basic premise is a space explorer lands on a planet populated only by women - the planet had been part of a colonization project centuries prior where the women were on a separate ship from the men, and the men's ship never made it, and the women's ship crashed and left most of their technology in ruins so their society is basically medieval-level tech. The women reproduce via cloning machines (their only surviving tech) so there's, like, 100 different women who all get cloned so all the women on the planet are one of those 100 at various ages, and each woman "type" is something of a specialist or personality type in the society (warrior, builder, artisan, diplomat, leader, cook, etc).
So these women have been waiting centuries for the coming of The Men, these mythical creatures that they know exist but have never seen, and this space explorer lands on their planet not knowing anything about it, and since he's just some dude they completely don't believe he's A Man because he's not bold and smart and perfect and a warrior and superhuman and noble (and they have no idea what A Man looks like), and it turns into a civil war between the women who start to believe he's A Man and the women who are convinced he's not. On top of that, there's a ruling class of women who actively never want the Men to show up because they know it would screw up their power dynamic, so they try to discredit the space explorer and ideally kill him so no more Men show up.
The space explorer, being a guy, tries to sleep with pretty much anyone he can but there ends up being exactly zero sex scenes in the whole story because he either botches it or gets hilariously interrupted or something every time. Even among the women who believe he's A Man, they constantly have to save his ass because he's largely inept and no good in a fight.
He falls in love with two of them (they're genetic twins so it's easy to do) and it turns into a humorous love triangle, and in the end the space explorer helps overthrow the ruling class with the promise that he will bring more Men, and the final page is one of my favorite final pages in any story ever and always makes me smile.
There are elements that haven't aged perfectly (it's a 65 year old story) and some plot elements I think could have been stronger but on the whole it's a lot of fun and doesn't take itself too seriously and plays around with some tropes you'd expect to see in a story like this, and I absolutely love the final page of the narrative.