I think it varies a lot by the user. I think (hope) most people are just joking, but I’m sure we have a number of people who aren’t joking.
But also keep in mind we absolutely have propaganda bots and trolls here. They’re quite good at directing the hivemind, even without the assistance of complete loons.
“I don’t really get why people get so up in arms about discussing it, but Sex is fun. Be careful though, those swimmers are persistent little fuckers.”
“Drugs feel good and you think everything is fine until one day you look up and realize it all went wrong years ago. I can’t stop you, but I really hope you’ll choose not to try them.”
I think both worked out well. I’m sex positive and I generally avoid drugs because it just isn’t worth the risk of finding that one substance that totally ruins my life.