linguistic purism
That must have been really subtle, all I remember is a concern specifically about how a sufficiently totalitarian regime may try to weaponize language as a further means of subjugation, not that language evolving is bad in principle.
To be clear, I mean to say that in society where it’s life or death to be highly guarded and suspicious of everyone any romantic relationship is necessarily poisoned.
Plus I think there’s a whole thing in the book about things being so restricted that fucking for fun is in itself an act of rebellion and thus another thing your partner has over you if they happen to need to give something up to the authorities.