I'd probably oppose this, just 'cause, like, I don't want to discuss sex on the forum in of itself, so much as I want to be able to make references to it during other discussions, or, well, really, to make bawdy jokes, without bothering anyone else. Having a Horny Thread just seems... icky to me. Like, there's only one person I really want to discuss sex with in 99 out of a 100 cases (Mrs. Gaagaagiins). Ain't none of y'all are her!!! And, like, if consenting adults from the insert credit forums wanted to have a Horny Discussion they could do so on discord or something. We don't necessarily need to host that.
So in our hypothetical party where we're standing next to each other, I'd certainly know to not make a ribald joke to your face, but if in the course of turning around and talking to someone else within earshot of you, if I thought of a really funny one, I'd love to be able to have you 1. not be able to hear it in the moment of me saying it 2. receive an approximate description of the nature of the joke's sexual content 3. be able to replay the audio if you so choose, since even if you don't want to have a conversation about sex, you may (or may not) still want to appreciate a joke after seeing a rough description of the nature of its sexual content (like, maybe you could appreciate a good pun on the name of genitalia).